| European_Secretariat_for_Scientific_Publications SEPS operates as a link between universities, publishing houses and authors with the aim of promoting translation of scientific works in the various European languages to achieve a wide distribution o |
| Iasi_Politechnic_Magazine Features book and soft reviews covering a variety of topics, such as mathematics, biochemistry, food science, polymers and mechanical engineering. |
| Inspec Online database containing indexed abstracts for the published literature in physics, electrical engineering, electronics, communications, control engineering, computers and computing, and information |
| Open_Archives_Initiative Develops and promotes interoperability standards that aim to facilitate the efficient dissemination of e-prints and other electronic content, primarily in the sciences. |
| Scholars\'_Forum A New Model For Scholarly Communication - Caltech proposal for university-author-society run e-journal system for publishing science. With follow-up discussion. HTML/PDF. |
| The_Scientific_World Features SciBase, a fee-based database of 30 million articles published since 1965 in more than 30,000 journals. Also news, conferences, recent publications, and reference. |
| SpringerLink Information about scientific books and journals of the Springer publishing group, CD-ROM publications, software products, and catalogues, and online access (by subscription) to some contents. |
| Thomson_Scientific Maintains a large collection of bibliographic and indexing data for scientific literature and measures the impact and influence of published research. Most content requires an institutional subscripti |
| Virtual_Technical_Reports_Center A list of institutions providing full text or searchable extended abstracts of their technical reports. |
| WSEAS_E-Library WSEAS conference papers from 1999 onwards. Index, abstracts free, payment required for full text (PDF). |
| Article_Sciences Scientific article search and order engine, a service provided by Institut de l'Information Scientifique et Technique (INIST) of Centre National de la Recherche Scientifique (CNRS), France. |
| CiteSeer Search engine for computer science and related matters. For all results number of citations are given which allows to estimate the importance of a paper in a given context. Most of the papers are cach |
| ISI_Highly_Cited A search tool to identify individuals, departments and laboratories that have made fundamental contributions to the advancement of science and technology in recent decades. |
| iSpecies A species search engine from Rod Page of Glasgow University. Search on either the common or Latin name of a species. Results are generated by querying other data sources. |
| Online_Journals_Search_Engine A multi-search tool that permits queries of a number of scientific journals. |
| Scirus Search engine that fetches only scientific websites. |
| SciSeek Science search engine and directory. Also provides forums, tools and related news. |
| About_The_Peace_Corps Volunteers work in areas like education, youth outreach and community development, the environment, and information technology. |
| Australian_Natural_Resource_Management_Information Links to various sources for environmental employment in Australia. |
| ChinaProject_net Consultants, jobs, and projects particularly in environmental and management issues in China. |
| Cyber-Sierra\'s_Natural_Resources_Job_Search Employment websites arranged by category: forestry, water resources, and GIS. |
| DevNetJobs_org International development jobs in UN institutions, aid agencies, international NGOs, as well as multilateral, financial, academic and research institutions. |
| Earthworks Jobs in oil, mining, geoscience, environmental, GIS and related subjects. |
| ECEA_Jobs Job listing service for environmental positions from Environmental Careers Bulletin, Inc. |
| Eden_Recruitment_Ltd_ Specialises in the recruitment of experienced environmental professionals to fill key positions within the private and public sector in the UK. |
| Environmental_Business Environmental news and job links. |
| Environmental_Career_Opportunities Internet links collection. |
| Environmental_Career_Opportunities_(newsletter) Subscription-based, biweekly newsletter with hundreds of job vacancies in environmental policy, conservation, education, engineering and internships in all sectors. |
| Environmental_Career_Page List of resources recommended by National Council for Science and the Environment (US). |
| Environmental_Careers_Organization_(ECO) Offers paid environmental internships in the US for university students and recent graduates. Information for applicants and for environmental employers interested in skilled interns. |
| Environmental_Data_Interactive_Exchange_(edie)_Job_Centre Lists position openings and candidates' CVs, primarily in the UK and in fields of water, waste and recycling, climate change, energy, and contaminated land. Includes employer profiles. |
| Environmental_Data_Services_Ltd_(ENDS) Provides environmental intelligence for professionals in Europe, including news, jobs, events and web site listing. |
| Environmental,_Health_&_Safety_Search_Associates,_Inc_ A national staffing firm that specializes exclusively in the safety, industrial hygiene and environmental professions. |
| Environmental_Health_Perspectives_-_Position_Announcements Lists job openings in environmental health fields. |
| Environmental_Jobs_and_Careers Covers environmental jobs in government, companies, and non-profits: engineers, chemists, technicians, and geologists. Employers may submit vacancies. |
| EnvironmentalCAREER_com Environmental Career Center's environmental and natural resources job listing and career information site: jobs, books, career news, live career conferences. Helping people work for the environment si |
| Environmental-Expert_com Listings for various environmental fields worldwide. |
| EnvironmentJob_co_uk Environment jobs and volunteering in the UK. |
| Green_Dream_Jobs Job and internship listings for jobs within sustainable businesses and organizations. |
| GreenBiz_JobLink Free job- and resume-posting service for environmental professionals, from recent grads to career changers. |
Information at the foundation of modern science and technology from the Physics Laboratory of NIST 
Constants,Units &Uncertaintyhome page 
Essentials of expressing measurement uncertainty Basic definitions Evaluating uncertainty components Combining uncertainty components Expanded uncertainty and coverage factor Examples of uncertainty statements Background International and U.S. perspectives on measurement uncertainty Bibliography Online publications and purchasing information 