Princeton University Press, 1968.Monographs in Population Biology, no.2.Hard covers, dust jacket.V.g./V.g. Hard covers, jacket sl.frayed at extremities; otherwise little used.ix, 120 pp. In English.1 kg.
Academic Press, 1969.Reprinted from Biological Journal of the Linnean Society vol.1 nos.1 & 2.Hard covers, dust jacket.Fine/Fine.Scarcely used; no inscriptions. In English.1 kg.
Natural History Museum, London, 1981.1st edition.Paper covers.ISBN: 0521282764.V.g./No Jacket.Published to accompany an exhibition with the same name.Little used. In English.1 kg.