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Creation Date 

1. Before 1700  (14)
2. 1700 To 1909  (22,901)
3. 1910 To 1939  (122,015)
4. 1940 To 1952  (129,778)
5. After 1952  (30,078)
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New Records 

1. New From Last Month  (1)
2. New From Last 3 Month  (86)
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Resource Type 

1. Patents  (296,683)
2. Articles  (4,309)
3. Reports  (1,187)
4. Images  (929)
5. Web Resources  (704)
6. magazinearticle  (385)
7. Books  (313)
8. Archival Material / Manuscripts  (101)
9. Government Documents  (53)
10. Thesises (postgraduate)  (43)
11. Videos  (37)
12. Other  (9)
13. Text Resources  (8)
14. Drawing/Maps  (8)
15. Reviews  (6)
16. Datasets  (4)
17. Newsletter Articles  (3)
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19. Journals  (1)
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Subject 

1. Heating  (164,408)
2. Lighting  (164,390)
3. Weapons  (164,376)
4. Mechanical Engineering  (164,370)
5. Blasting  (164,365)
6. Hot-Gas Or Combustion-Product Engine Plants  (105,393)
7. Combustion Engines  (105,393)
8. Chemistry  (75,508)
9. Metallurgy  (75,255)
10. Fuels  (73,352)
11. Lubricants  (73,289)
12. Peat  (73,287)
13. Petroleum, Gas Or Coke Industries  (73,286)
14. Technical Gases Containing Carbon Monoxide  (73,286)
15. Supplying Combustion Engines In General, With Combustiblemixtures Or Constituents Thereof  (39,715)
16. Technical Subjects Covered By Former Uspc Cross-Reference Art Collections [xracs] And Digests  (35,377)
17. General Tagging Of Cross-Sectional Technologies Spanning Over Several Sections Of The Ipc  (35,377)
18. General Tagging Of New Technological Developments  (35,377)
19. Internal-Combustion Piston Engines  (32,087)
20. Combustion Engines In General  (32,087)
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Databases 

1. esp@cenet  (296,683)
2. ProQuest Central  (1,897)
3. HighWire Press (Free Journals)  (1,789)
4. Europeana Collections  (1,609)
5. JSTOR Early Journal Content  (1,124)
6. DTIC STINET  (876)
7. DTIC Technical Reports  (876)
8. PubMed Central  (818)
9. Geneva Foundation Free Medical Journals at publisher websites  (543)
10. MEDLINE  (527)
11. Technical Report Archive and Image Library (TRAIL) @ UNT Digital Library  (291)
12. HathiTrust Digital Library Full View Worldwide  (246)
13. Open Shared Collection  (164)
14. ROAD: Directory of Open Access Scholarly Resources  (133)
15. Hyper Article en Ligne (HAL) (Open Access)  (94)
16. DOAJ Directory of Open Access Journals  (79)
17. HathiTrust Digital Library Full View U.S. Only  (77)
18. Digital Library of the Commons  (71)
19. US Government Documents  (66)
20. ProQuest One Psychology  (60)
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Language 

1. English  (196,484)
2. French  (59,066)
3. German  (41,675)
4. Russian  (5,134)
5. Finnish  (1,404)
6. Dutch  (630)
7. Danish  (383)
8. Spanish  (240)
9. Japanese  (135)
10. Swedish  (125)
11. Italian  (68)
12. Catalan  (12)
13. Portuguese  (8)
14. Polish  (8)
15. Latin  (5)
16. Czech  (4)
17. Slovak  (1)
18. Afrikaans  (1)
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Journal Title 

1. Barron's  (435)
2. Barron's National Business And Financial Weekly  (538)
3. Bmj  (244)
4. British Medical Journal  (442)
5. Proceedings Of The National Academy Of Sciences - Pnas  (121)
6. Proceedings Of The Royal Society Of London  (278)
7. Proceedings Of The Royal Society Of London. Series A, Containing Papers Of A Mathematical And Physical Character  (447)
8. Proceedings Of The Royal Society Of London. Series A, Mathematical And Physical Sciences  (298)
9. Proceedings Of The Royal Society. A, Mathematical, Physical, And Engineering Sciences  (182)
10. Science  (191)
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