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Population, resources, environment : issues in human ecology / by Paul R. Ehrlich and Anne H. Ehrlich.
by Ehrlich, Anne H.; Ehrlich, Paul R.;
Year: 1972., Callno: 502.3 EHR
Book
Population, resources, environment: issues in human ecology.
by Ehrlich, Paul R.; Ehrlich, Anne H.;
Year: 1970.
Book
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