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2. Compositions Based Thereon  (1,766)
3. Their Preparation Or Chemical Working-Up  (1,766)
4. Organic Macromolecular Compounds  (1,766)
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14. Preparation Thereof Not Covered By Subclasses D21c Or D21d  (631)
15. Impregnating Or Coating Of Paper  (631)
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17. Treatment Of Finished Paper Not Covered By Class B31 Or Subclass D21g  (631)
18. Apparatus Therefor  (619)
19. Production Of Cellulose By Removing Non-Cellulose Substancesfrom Cellulose-Containing Materials  (585)
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Databases 

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Journal Title 

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3. Comparative Economic Studies  (1)
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