Dr. Walker makes a signal contribution in gathering together all available information on the dragonflies of Canada and Alaska. The order as a whole and the zygoptera are covered. The treatment is not confined to taxonomy and geographical distribution, but includes data on habitats, seasons of adult life, and brief notes on habits when these are available.
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Formato PDF ● Páginas 306 ● ISBN 9781442654181 ● Editora University of Toronto Press, Scholarly Publishing Division ● Publicado 1953 ● Carregável 3 vezes ● Moeda EUR ● ID 6568472 ● Proteção contra cópia Adobe DRM
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