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1. Before 1957  (58,407)
2. 1957 To 1973  (103,594)
3. 1974 To 1990  (398,962)
4. 1991 To 2008  (1,743,185)
5. After 2008  (3,326,261)
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New Records 

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Subject 

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2. Lighting  (862,888)
3. Mechanical Engineering  (862,858)
4. Weapons  (860,773)
5. Blasting  (859,873)
6. Electricity  (852,024)
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8. Performing Operations  (821,539)
9. Physics  (569,261)
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13. Engineering Elements And Units  (328,280)
14. Thermal Insulation In General  (328,280)
15. General Measures For Producing And Maintaining Effectivefunctioning Of Machines Or Installations  (328,280)
16. Life Sciences & Biomedicine  (254,694)
17. Hygiene  (249,565)
18. Medical Or Veterinary Science  (246,145)
19. Vehicles In General  (203,056)
20. Testing  (202,317)
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Author/Creator 

1. Hanson, Mark  (86)
2. Lewis, Roger  (68)
3. Maclennan, Duncan  (41)
4. Teixeira, Carlos  (33)
5. Tomalty, Ray  (29)
6. Carter, Tom  (28)
7. Murdie, Robert  (28)
8. Hiebert, Daniel  (21)
9. Bruce, David  (21)
10. Cox, Wendell  (17)
11. Litman, Todd  (16)
12. Silver, Jim  (16)
13. Canada Mortgage and Housing Corporation  (11)
14. Pomeroy, Steve  (10)
15. Cox, Wendell  (8)
16. Lewis, Roger  (8)
17. Engeland, John  (6)
18. Suttor, Greg  (6)
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20. Tomalty, Ray  (5)
21. Teixeira, Carlos  (5)
22. Zon, Noah  (5)
23. Hiebert, Daniel  (5)
24. Jakubec, Lance  (5)
25. Somerville, Tsur  (4)
26. Prentice, Jeremiah  (4)
27. Carter, Tom  (4)
28. Kraus, Deborah  (4)
29. Silver, Jim  (4)
30. Berlin, Ryan  (3)
31. Engeland, John  (3)
32. Svedova, Jana  (3)
33. Carlson, Margie  (3)
34. Litman, Todd  (3)
35. Murdie, Robert  (3)
36. Maclennan, Duncan  (3)
37. Samivel, Sibi  (3)
38. Canada  (3)
39. RAND Gulf States Policy Institute (Organization)  (2)
40. Somerville, Tsur  (2)
41. Guitard, Paulette  (2)
42. Hanson, Mark  (2)
43. Albert, Marika  (2)
44. Guitard, Paulette  (2)
45. Gough, Bruce  (2)
46. Suttor, Greg  (1)
47. Kraus, Deborah  (1)
48. Pomeroy, Steve  (1)
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Databases 

1. esp@cenet  (3,068,465)
2. ProQuest Central  (1,588,832)
3. DOAJ Directory of Open Access Journals  (267,221)
4. USPTO Published Applications  (267,063)
5. USPTO Issued Patents  (213,036)
6. ROAD: Directory of Open Access Scholarly Resources  (212,249)
7. Geneva Foundation Free Medical Journals at publisher websites  (174,097)
8. MEDLINE  (170,784)
9. PubMed Central  (144,945)
10. Ebook Central - Academic Complete  (77,215)
11. Springer Open Access Journals  (48,240)
12. US Government Documents  (45,883)
13. Europeana Collections  (44,531)
14. Free E- Journals  (37,234)
15. HighWire Press (Free Journals)  (25,752)
16. Coronavirus Research Database  (24,228)
17. HathiTrust Digital Library Full View Worldwide  (23,064)
18. IOP Publishing (Open access)  (18,367)
19. Public Library of Science (PLoS) Journals Open Access  (16,962)
20. Wiley Online Library Open Access  (16,431)
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Language 

1. English  (5,160,668)
2. French  (623,651)
3. German  (561,622)
4. Chinese  (469,251)
5. Japanese  (185,689)
6. Korean  (151,191)
7. Spanish  (84,098)
8. Russian  (53,200)
9. Portuguese  (35,512)
10. Polish  (29,273)
11. Italian  (13,256)
12. Swedish  (12,093)
13. Danish  (11,787)
14. Norwegian  (11,040)
15. Dutch  (10,072)
16. Hungarian  (6,925)
17. Finnish  (6,078)
18. Ukrainian  (4,307)
19. Czech  (3,297)
20. Turkish  (2,744)
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Journal Title 

1. National Mortgage News  (14,938)
2. New York Times  (96,693)
3. Planning  (15,062)
4. Plos One  (14,267)
5. Sustainability  (11,862)
6. The American Banker  (13,939)
7. The Bond Buyer  (14,101)
8. The Economist  (13,384)
9. The Estates Gazette  (10,456)
10. The Washington Post  (32,089)
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