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Creation Date 

1. Before 1990  (217)
2. 1990 To 1997  (458)
3. 1998 To 2005  (2,400)
4. 2006 To 2014  (4,021)
5. After 2014  (5,417)
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New Records 

1. New From Last Month  (163)
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Subject 

1. Human Necessities  (4,209)
2. Transporting  (2,858)
3. Performing Operations  (2,858)
4. Lighting  (2,573)
5. Weapons  (2,573)
6. Blasting  (2,573)
7. Heating  (2,573)
8. Mechanical Engineering  (2,573)
9. Electricity  (2,261)
10. Hygiene  (1,914)
11. Medical Or Veterinary Science  (1,914)
12. Engineering Elements And Units  (1,881)
13. Thermal Insulation In General  (1,881)
14. General Measures For Producing And Maintaining Effectivefunctioning Of Machines Or Installations  (1,881)
15. Basic Electric Elements  (1,767)
16. Fixed Constructions  (1,626)
17. Line Connectors  (1,306)
18. Current Collectors  (1,306)
19. Physics  (987)
20. Joints Or Fittings For Pipes  (812)
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Language 

1. English  (10,879)
2. French  (424)
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