Refine My Results

Creation Date 

1. Before 1989  (12)
2. 1989 To 1997  (37)
3. 1998 To 2005  (217)
4. 2006 To 2014  (1,061)
5. After 2014  (10,911)
6. More options 

New Records 

1. New From Last Week  (14)
2. New From Last Month  (524)
3. More options 

Subject 

1. Lighting  (3,646)
2. Weapons  (3,646)
3. Blasting  (3,646)
4. Heating  (3,646)
5. Mechanical Engineering  (3,646)
6. Engineering Elements And Units  (3,040)
7. Thermal Insulation In General  (3,040)
8. General Measures For Producing And Maintaining Effectivefunctioning Of Machines Or Installations  (3,040)
9. Electricity  (2,944)
10. Transporting  (2,865)
11. Performing Operations  (2,865)
12. Human Necessities  (2,815)
13. Basic Electric Elements  (2,399)
14. Line Connectors  (2,039)
15. Current Collectors  (2,039)
16. Hygiene  (1,488)
17. Medical Or Veterinary Science  (1,488)
18. Fixed Constructions  (1,403)
19. Means For Thermal Insulation In General  (944)
20. Joints Or Fittings For Pipes  (944)
21. More options 

Language 

1. English  (7,628)
2. French  (1,949)
3. More options