551.09 Historical, geographic, persons treatment of geology
551.092 Geologists vi
551.09 Lịch sử, địa lý, con người của địa chất học
551.092 Nhà địa chất học it
551.09 Storia, geografia, persone della geologia
551.092 Geologi en
551.09 History, geographic treatment, biography of geology
551.092 Geologists de
551.09 Geschichte, geografische Behandlung, Biografien der Geologie
551.092 Geologen
Dewey Decimal Classification
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