Nelson, B. M. W. (1928). State recreation: Parks, forests and game preserves. National conference on State parks, Inc..
Citace podle Chicago (17th ed.)Nelson, Beatrice M. Ward. State Recreation: Parks, Forests and Game Preserves. Washington, D.C.: National conference on State parks, Inc., 1928.
Citace podle MLA (8th ed.)Nelson, Beatrice M. Ward. State Recreation: Parks, Forests and Game Preserves. National conference on State parks, Inc., 1928.
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