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Creation Date 

1. Before 1700  (90)
2. 1700 To 1909  (857)
3. 1910 To 1939  (4,780)
4. 1940 To 1952  (6,644)
5. After 1952  (1,958)
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New Records 

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Resource Type 

1. Patents  (12,885)
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5. magazinearticle  (82)
6. Images  (79)
7. Books  (64)
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Subject 

1. Chemistry  (12,900)
2. Metallurgy  (12,895)
3. Peat  (10,146)
4. Fuels  (10,145)
5. Lubricants  (10,141)
6. Petroleum, Gas Or Coke Industries  (10,140)
7. Technical Gases Containing Carbon Monoxide  (10,140)
8. Natural Gas  (10,129)
9. Synthetic Natural Gas Obtained By Processes Not Covered Bysubclasses C10g, C10k  (10,128)
10. Fuels Not Otherwise Provided For  (10,128)
11. Firelighters  (10,128)
12. Liquefied Petroleum Gas  (10,128)
13. Coating Metallic Material  (2,837)
14. Diffusion Treatment Of Metallic Material  (2,837)
15. Inhibiting Corrosion Of Metallic Material Or Incrustation Ingeneral  (2,837)
16. Coating Material With Metallic Material  (2,837)
17. Chemical Surface Treatment  (2,837)
18. Technical Subjects Covered By Former Uspc Cross-Reference Art Collections [xracs] And Digests  (675)
19. General Tagging Of Cross-Sectional Technologies Spanning Over Several Sections Of The Ipc  (675)
20. General Tagging Of New Technological Developments  (675)
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Databases 

1. esp@cenet  (12,885)
2. ProQuest Central  (488)
3. JSTOR Early Journal Content (Open Access)  (200)
4. Technical Report Archive and Image Library (TRAIL) @ UNT Digital Library  (152)
5. Europeana Collections  (107)
6. GFMER Free Medical Journals  (99)
7. PANGAEA  (92)
8. HighWire Press (Free Journals)  (85)
9. Open Access: Freely Accessible Journals by multiple vendors  (69)
10. DOAJ Directory of Open Access Journals  (50)
11. HathiTrust Digital Library Full View Worldwide  (44)
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13. DTIC STINET  (34)
14. DTIC Technical Reports  (34)
15. ThinkTech  (31)
16. ProQuest One Psychology  (30)
17. Gallica - All content.  (25)
18. Gallica - Open Access  (24)
19. PubMed Central (Open access)  (19)
20. Digital Library of the Commons  (18)
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Language 

1. English  (6,875)
2. French  (5,824)
3. German  (1,401)
4. Finnish  (129)
5. Russian  (69)
6. Spanish  (22)
7. Japanese  (16)
8. Portuguese  (7)
9. Latin  (5)
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11. Danish  (3)
12. Dutch  (3)
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14. Afrikaans  (1)
15. Icelandic  (1)
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Journal Title 

1. American Journal Of Science  (65)
2. Barron's  (128)
3. Barron's National Business And Financial Weekly  (34)
4. Current Science  (17)
5. Journal Of The Franklin Institute  (39)
6. Nature  (30)
7. Science  (51)
8. South African Journal Of Science  (25)
9. The American Mineralogist  (114)
10. The Journal Of Geology  (42)
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