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Creation Date 

1. Before 1993  (12)
2. 1993 To 1994  (28)
3. 1995 To 1996  (28)
4. 1997 To 1999  (19)
5. After 1999  (7)
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Subject 

1. Production Of Cellulose  (88)
2. Paper-Making  (88)
3. Regeneration Of Pulping Liquors  (67)
4. Apparatus Therefor  (67)
5. Production Of Cellulose By Removing Non-Cellulose Substancesfrom Cellulose-Containing Materials  (67)
6. Chemistry  (26)
7. Metallurgy  (26)
8. Paper Not Otherwise Provided For  (18)
9. Preparation Thereof Not Covered By Subclasses D21c Or D21d  (18)
10. Impregnating Or Coating Of Paper  (18)
11. Pulp Compositions  (18)
12. Treatment Of Finished Paper Not Covered By Class B31 Or Subclass D21g  (18)
13. Microbiology  (10)
14. Biochemistry  (10)
15. Compositions Thereof  (10)
16. Beer  (10)
17. Enzymology  (10)
18. Microorganisms Or Enzymes  (10)
19. Culture Media  (10)
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Language 

1. Swedish  (71)
2. English  (4)
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