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Creation Date 

1. Before 1900  (10)
2. 1900 To 1929  (9,663)
3. 1930 To 1950  (33,911)
4. 1951 To 1954  (9,120)
5. After 1954  (7,216)
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New Records 

1. New From Last Month  (16)
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Resource Type 

1. Patents  (57,970)
2. Articles  (1,666)
3. Reports  (151)
4. Books  (69)
5. Web Resources  (47)
6. Audio  (7)
7. Thesises (postgraduate)  (4)
8. Government Documents  (2)
9. Book Chapters  (1)
10. magazinearticle  (1)
11. Conference Proceedings  (1)
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Subject 

1. Physics  (56,979)
2. Measuring  (28,932)
3. Testing  (28,932)
4. Controlling  (28,276)
5. Regulating  (28,276)
6. Systems For Controlling Or Regulating Non-Electric Variables  (24,602)
7. Measuring Magnetic Variables  (23,830)
8. Measuring Electric Variables  (23,830)
9. Tariff Metering Apparatus  (4,829)
10. Arrangements For Measuring Two Or More Variables Not Coveredin A Single Other Subclass  (4,829)
11. Measuring Not Specially Adapted For A Specific Variable  (4,829)
12. Measuring Or Testing Not Otherwise Provided For  (4,829)
13. Heating  (4,067)
14. Lighting  (4,066)
15. Weapons  (4,066)
16. Blasting  (4,066)
17. Mechanical Engineering  (4,066)
18. Technical Subjects Covered By Former Uspc Cross-Reference Art Collections [xracs] And Digests  (4,054)
19. General Tagging Of Cross-Sectional Technologies Spanning Over Several Sections Of The Ipc  (4,054)
20. General Tagging Of New Technological Developments  (4,054)
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Databases 

1. esp@cenet  (57,970)
2. JSTOR Early Journal Content Free  (885)
3. HighWire Press (Free Journals)  (304)
4. ProQuest Central  (283)
5. Project Euclid Open Access  (274)
6. American Mathematical Society Publications - Open Access  (246)
7. Geneva Foundation Free Medical Journals at publisher websites  (204)
8. PubMed Central  (157)
9. DTIC STINET  (130)
10. DTIC Technical Reports  (130)
11. Europeana Collections  (54)
12. ProQuest One Psychology  (39)
13. MEDLINE  (33)
14. HathiTrust Digital Library Full View Worldwide  (30)
15. Gallica - All content.  (24)
16. Gallica Ebooks  (24)
17. AgEcon  (24)
18. Gallica - Open Access  (18)
19. Technical Report Archive and Image Library (TRAIL) @ UNT Digital Library  (16)
20. DOAJ Directory of Open Access Journals  (12)
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Language 

1. English  (35,751)
2. German  (11,925)
3. French  (9,249)
4. Russian  (2,834)
5. Japanese  (134)
6. Finnish  (86)
7. Spanish  (73)
8. Dutch  (28)
9. Italian  (24)
10. Danish  (15)
11. Polish  (3)
12. Swedish  (3)
13. Catalan  (3)
14. Persian  (1)
15. Latin  (1)
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Journal Title 

1. American Journal Of Mathematics  (53)
2. Annals Of Mathematics  (40)
3. Biometrika  (63)
4. Econometrica  (43)
5. Proceedings Of The American Mathematical Society  (43)
6. Proceedings Of The National Academy Of Sciences - Pnas  (152)
7. Publications Of The Astronomical Society Of The Pacific  (260)
8. The Annals Of Mathematical Statistics  (273)
9. Theory Of Probability And Its Applications  (49)
10. Transactions Of The American Mathematical Society  (176)
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