Robert G Franke. Man and the changing environment.
Trích dẫn kiểu ChicagoRobert G Franke. Man and the Changing Environment.
MLA CitationRobert G Franke. Man and the Changing Environment.
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Robert G Franke. Man and the changing environment.
Trích dẫn kiểu ChicagoRobert G Franke. Man and the Changing Environment.
MLA CitationRobert G Franke. Man and the Changing Environment.