Hawksworth, DL 1973: Ecological factors and species delimitation in the lichens. - In: V. H. Heywood (ed.): Taxonomy and Ecology. . Academic Press, London and New York pp. 31-69. [RLL List # 88 / Rec.# 7962] Keywords: ECOLOGY / SPECIES CONCEPTS/ TAXONOMY/ REVIEW/ CORRELATIONS
Abstract: [Review article.]
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