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Creation Date 

1. Before 1978  (2,024)
2. 1978 To 1980  (3,620)
3. 1981 To 1983  (4,629)
4. 1984 To 1987  (7,801)
5. After 1987  (10,107)
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New Records 

1. New From Last Month  (525)
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Subject 

1. Transporting  (8,823)
2. Performing Operations  (8,823)
3. Human Necessities  (7,458)
4. Lighting  (7,413)
5. Weapons  (7,413)
6. Blasting  (7,413)
7. Heating  (7,413)
8. Mechanical Engineering  (7,413)
9. Engineering Elements And Units  (5,877)
10. Thermal Insulation In General  (5,877)
11. General Measures For Producing And Maintaining Effectivefunctioning Of Machines Or Installations  (5,877)
12. Electricity  (4,816)
13. Hygiene  (4,065)
14. Medical Or Veterinary Science  (4,065)
15. Basic Electric Elements  (3,962)
16. Means For Thermal Insulation In General  (3,264)
17. Joints Or Fittings For Pipes  (3,264)
18. Pipes  (3,264)
19. Supports For Pipes, Cables Or Protective Tubing  (3,264)
20. Fixed Constructions  (3,235)
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Language 

1. English  (22,803)
2. French  (4,618)
3. German  (2,787)
4. Italian  (1,024)
5. Spanish  (984)
6. Swedish  (467)
7. Norwegian  (383)
8. Danish  (347)
9. Korean  (296)
10. Dutch  (274)
11. Portuguese  (261)
12. Finnish  (250)
13. Russian  (178)
14. Romanian  (17)
15. Japanese  (14)
16. Polish  (6)
17. Hungarian  (5)
18. Turkish  (5)
19. Chinese  (5)
20. Arabic  (4)
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