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323.1/
323.1/
Intangible
http://dewey.info/class/323.1/
11277228
11632471
1227772
1269792
14594214
155708991
16158619
1719880
2111965
2190331
2205229
229926
22996704
262007
39060905
400256
511335
5338615
583317
708851
8679913
959674
about
323.1/
Intangible
http://dewey.info/class/323.1/
type
Intangible