Classification
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340 - Law
1
384 - Communications; telecommunication
1
400 - Language
1
509 - Historical, geographic & persons treatment
1
530 - Physics
1
539 - Modern physics
1
577 - Ecology
1
612 - Human physiology
1
770 - Photography, photographs & computer art
1
809 - History, description & criticism
1
937 - Italy & adjacent territories to 476
1
951 - China & adjacent areas
1