Hirschfeld, G. (1973). The people: Growth and survival : first cycle. Aldine Pub. for the Council for the Study of Mankind.
Citace podle Chicago (17th ed.)Hirschfeld, Gerhard. The People: Growth and Survival : First Cycle. Chicago: Aldine Pub. for the Council for the Study of Mankind, 1973.
Citace podle MLA (9th ed.)Hirschfeld, Gerhard. The People: Growth and Survival : First Cycle. Aldine Pub. for the Council for the Study of Mankind, 1973.
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