(1981). The Evolving Biosphere General / Editor, Ph Greenwood; Editor, P L. Porey. Cambridge University Press.
Chicago-viite (17. p.)The Evolving Biosphere General / Editor, Ph Greenwood; Editor, P L. Porey. Cambridge University Press, 1981.
MLA-viite (8. p.)The Evolving Biosphere General / Editor, Ph Greenwood; Editor, P L. Porey. Cambridge University Press, 1981.
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