Refine My Results

Creation Date 

1. Before 1990  (195)
2. 1990 To 1997  (440)
3. 1998 To 2005  (2,191)
4. 2006 To 2014  (3,915)
5. After 2014  (5,198)
6. More options 

New Records 

1. New From Last Month  (193)
2. More options 

Subject 

1. Human Necessities  (4,067)
2. Transporting  (2,611)
3. Performing Operations  (2,611)
4. Lighting  (2,509)
5. Weapons  (2,509)
6. Blasting  (2,509)
7. Heating  (2,509)
8. Mechanical Engineering  (2,509)
9. Electricity  (2,184)
10. Engineering Elements And Units  (1,865)
11. Thermal Insulation In General  (1,865)
12. General Measures For Producing And Maintaining Effectivefunctioning Of Machines Or Installations  (1,865)
13. Basic Electric Elements  (1,719)
14. Hygiene  (1,666)
15. Medical Or Veterinary Science  (1,666)
16. Fixed Constructions  (1,545)
17. Line Connectors  (1,273)
18. Current Collectors  (1,273)
19. Physics  (896)
20. Joints Or Fittings For Pipes  (868)
21. More options 

Language 

1. English  (10,439)
2. French  (423)
3. More options