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1. Textiles  (179)
2. Production Of Cellulose  (169)
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5. Preparation Thereof Not Covered By Subclasses D21c Or D21d  (92)
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20. Production Of Cellulose By Removing Non-Cellulose Substancesfrom Cellulose-Containing Materials  (38)
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Databases 

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1. Alpine Entomology  (1)
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