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Creation Date 

1. Before 1920  (258)
2. 1920 To 1949  (1,013)
3. 1950 To 1952  (274)
4. 1953 To 1956  (144)
5. After 1956  (118)
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Subject 

1. Textiles  (601)
2. Chemistry  (499)
3. Metallurgy  (499)
4. Production Of Cellulose  (476)
5. Paper-Making  (476)
6. Compositions Based Thereon  (332)
7. Their Preparation Or Chemical Working-Up  (332)
8. Organic Macromolecular Compounds  (332)
9. Apparatus Therefor  (255)
10. Regeneration Of Pulping Liquors  (244)
11. Production Of Cellulose By Removing Non-Cellulose Substancesfrom Cellulose-Containing Materials  (244)
12. Polysaccharides  (235)
13. Derivatives Thereof  (235)
14. Performing Operations  (223)
15. Transporting  (222)
16. Spinning  (79)
17. Natural Or Artificial Threads Or Fibres  (79)
18. Human Necessities  (78)
19. General Tagging Of Cross-Sectional Technologies Spanning Over Several Sections Of The Ipc  (72)
20. General Tagging Of New Technological Developments  (72)
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Language 

1. English  (1,756)
2. French  (271)
3. Spanish  (26)
4. German  (17)
5. Dutch  (1)
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