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Creation Date 

1. Before 1969  (1)
2. 1969 To 1969  (1)
3. 1970 To 1970  (3)
4. 1971 To 1972  (6)
5. After 1972  (2)
6. More options 

Subject 

1. Textiles  (10)
2. Production Of Cellulose  (9)
3. Paper-Making  (9)
4. Regeneration Of Pulping Liquors  (6)
5. Apparatus Therefor  (6)
6. Production Of Cellulose By Removing Non-Cellulose Substancesfrom Cellulose-Containing Materials  (6)
7. Transporting  (3)
8. Performing Operations  (3)
9. Fibrous Raw Materials Or Their Mechanical Treatment  (3)
10. Nailing Or Stapling Machines In General  (2)
11. Working Or Preserving Wood Or Similar Material  (2)
12. Accessories For Paper-Making Machines  (1)
13. Agriculture  (1)
14. Calenders  (1)
15. Acyclic Or Carbocyclic Compounds  (1)
16. Casting  (1)
17. Casting Of Metals  (1)
18. Bleaching Leather Or Furs  (1)
19. Animal Husbandry  (1)
20. Biocides, E.G. As Disinfectants, As Pesticides, As Herbicides  (1)
21. More options