Ward, B., & Dubos, R. (1972). Only one earth : the care and maintenance of a small planet: The care and maintenance of a small planet. Andre Deutsch.
Citace podle Chicago (17th ed.)Ward, Barbara, a Rene Dubos. Only One Earth : The Care and Maintenance of a Small Planet: The Care and Maintenance of a Small Planet. London: Andre Deutsch, 1972.
Citace podle MLA (9th ed.)Ward, Barbara, a Rene Dubos. Only One Earth : The Care and Maintenance of a Small Planet: The Care and Maintenance of a Small Planet. Andre Deutsch, 1972.
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