%0 Book %E Valentine, D. H. 1912- %E Symposium of the Linnean Society of London, the Botanical Society of the British Isles, and the International Organisation of Plant Biosystematists %I Academic Press %D 1972 %C London %G English %@ 0127102507 %T Taxonomy, phytogeography and evolution : [proceedings of a symposium held by the Linnean Society of London, the Botanical Society of the British Isles, and the International Organisation of Plant Biosystematists, at the University of Manchester, Sept., 1971]