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1. Before 1977  (79,178)
2. 1977 To 1981  (228,572)
3. 1982 To 1986  (300,121)
4. 1987 To 1992  (399,538)
5. After 1992  (64)
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New Records 

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Subject 

1. Science & Technology  (989,936)
2. Physical Sciences  (987,590)
3. Chemistry  (416,140)
4. Exact Sciences And Technology  (360,329)
5. Physics  (334,065)
6. Technology  (169,255)
7. Chemistry, Multidisciplinary  (117,079)
8. Chemistry, Physical  (114,893)
9. Mathematics  (98,496)
10. Physics, Condensed Matter  (92,825)
11. Life Sciences & Biomedicine  (92,124)
12. Chemistry, Analytical  (80,901)
13. Astronomy & Astrophysics  (73,956)
14. Chemistry, Organic  (66,390)
15. Materials Science  (63,432)
16. Applied Sciences  (62,909)
17. Physics, Multidisciplinary  (60,654)
18. Earth, Ocean, Space  (59,757)
19. Physics, Applied  (58,457)
20. Organic Chemistry  (55,639)
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Author/Creator 

1. Division on Engineering and Physical Sciences  (21)
2. National Research Council  (20)
3. National Research Council (U.S.)  (13)
4. Commission on Engineering and Technical Systems  (10)
5. Commission on Physical Sciences, Mathematics, and Applications  (9)
6. National Materials Advisory Board  (4)
7. Energy Engineering Board  (2)
8. Board on Physics and Astronomy  (2)
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10. Steering Committee on Valuing Health Risks, Costs, and Benefits for Environmental Decisions, Board on Environmental Studies and Toxicology, Commission on Physical Sciences, National Research Council  (1)
11. Board on Ocean Science and Policy, Commission on Physical Sciences, Mathematics, and Resources, National Research Council  (1)
12. Mathematics and Resources  (1)
13. National Research Council (U.S.). Committee on Potential Applications of Concentrated Solar Photons  (1)
14. National Research Council (U.S.). Committee on Electrochemical Aspects of Energy Conservation and Production  (1)
15. Jones, Lyle V  (1)
16. National Research Council (U.S.). Committee on Solar Physics  (1)
17. National Research Council (U.S.). Committee on the Atmospheric Effects of Nuclear Explosions  (1)
18. Plasma Science Committee  (1)
19. National Research Council (U.S.). Committee on High-Performance Synthetic Fibers for Composites  (1)
20. Committee on Planetary Biology and Chemical Evolution  (1)
21. National Research Council (U.S.). Committee on Competitiveness of the Minerals and Metals Industry  (1)
22. National Research Council (U.S.). Committee on Enabling Technologies for Unified Life-Cycle Engineering of Structural Components  (1)
23. Environmental Studies Board  (1)
24. National Research Council Staff  (1)
25. National Research Council (U.S.). Astronomy and Astrophysics Survey Committee  (1)
26. National Research Council (U.S.). Committee on Chemical Engineering Frontiers: Research Needs and Opportunities  (1)
27. Hammond, P. Brett  (1)
28. National Research Council (U.S.). Committee on Advanced Space Based High Power Technologies  (1)
29. Global Tropospheric Chemistry Panel, Board of Atmospheric Sciences and Climate, Commission on Physical Sciences, Mathematics, and Resources, National Research Council  (1)
30. American Geophysical Union  (1)
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Databases 

1. ProQuest Central  (117,086)
2. DOAJ Directory of Open Access Journals  (55,404)
3. MEDLINE  (43,858)
4. Wiley-Blackwell AGU Digital Library  (27,648)
5. Wiley Online Library Open Access  (26,219)
6. Freely Accessible Journals  (24,973)
7. IOP Publishing (Open access)  (21,907)
8. ROAD: Directory of Open Access Scholarly Resources  (20,593)
9. HighWire Press (Free Journals)  (19,731)
10. NASA Technical Reports Server  (14,496)
11. Chemical Society of Japan Free  (13,866)
12. Oxford University Press Open Access  (11,519)
13. Free E- Journals  (9,267)
14. Project Euclid Open Access  (7,342)
15. American Mathematical Society Publications - Open Access  (5,848)
16. EDP Open  (5,105)
17. JSTOR Early Journal Content  (4,382)
18. Freely Accessible Japanese Titles  (4,181)
19. PubMed Central  (3,788)
20. RePEc  (3,416)
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Language 

1. English  (1,004,454)
2. Japanese  (136,417)
3. German  (2,445)
4. French  (1,633)
5. Chinese  (669)
6. Russian  (485)
7. Spanish  (76)
8. Dutch  (35)
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10. Danish  (27)
11. Latin  (18)
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14. Korean  (5)
15. Afrikaans  (5)
16. Norwegian  (2)
17. Welsh  (2)
18. Catalan  (1)
19. Arabic  (1)
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Journal Title 

1. Chemical Physics Letters  (13,956)
2. Journal Of Chromatography  (16,706)
3. Journal Of Geophysical Research  (14,661)
4. Journal Of Organic Chemistry  (16,101)
5. Journal Of Physical Chemistry  (12,744)
6. Journal Of The American Chemical Society  (20,977)
7. Physics Letters. B  (15,630)
8. Solid State Communications  (13,095)
9. Tetrahedron Letters  (16,706)
10. The Astrophysical Journal  (16,211)
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