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Creation Date 

1. Before 1977  (24)
2. 1977 To 1983  (51)
3. 1984 To 1990  (46)
4. 1991 To 1998  (79)
5. After 1998  (17)
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Resource Type 

1. Patents  (210)
2. Thesises (postgraduate)  (5)
3. Books  (1)
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Subject 

1. Textiles  (183)
2. Production Of Cellulose  (169)
3. Paper-Making  (169)
4. Apparatus Therefor  (119)
5. Regeneration Of Pulping Liquors  (118)
6. Production Of Cellulose By Removing Non-Cellulose Substancesfrom Cellulose-Containing Materials  (118)
7. Chemistry  (48)
8. Metallurgy  (48)
9. Transporting  (47)
10. Performing Operations  (47)
11. Paper Not Otherwise Provided For  (35)
12. Preparation Thereof Not Covered By Subclasses D21c Or D21d  (35)
13. Impregnating Or Coating Of Paper  (35)
14. Pulp Compositions  (35)
15. Treatment Of Finished Paper Not Covered By Class B31 Or Subclass D21g  (35)
16. Fibrous Raw Materials Or Their Mechanical Treatment  (26)
17. Physical Or Chemical Processes Or Apparatus In General  (23)
18. Human Necessities  (19)
19. Methods Of Producing Paper Thereon  (16)
20. Paper-Making Machines  (16)
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Databases 

1. esp@cenet  (210)
2. Europeana Collections  (4)
3. HathiTrust Digital Library Full View U.S. Only  (1)
4. SWEPUB Freely available online  (1)
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Language 

1. Finnish  (102)
2. English  (19)
3. French  (1)
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