Open University, Silvertown, J. W., & Sarre, P. (1990). Environment and society. Hodder and Stoughton; in association with The Open University.
Παραπομπή σε μορφή Chicago (17η εκδ.)Open University, Jonathan W. Silvertown, και Philip Sarre. Environment and Society. London: Hodder and Stoughton; in association with The Open University, 1990.
Παραπομπή σε μορφή MLA (9th εκδ.)Open University, et al. Environment and Society. Hodder and Stoughton; in association with The Open University, 1990.
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