Principles of Systematic Zoology
. By Ernst Mayr. Pp. xi + 428. (McGraw-Hill: New York and Maidenhead, 1969.) £6.00.
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CROWSON, R. Animal Systematics. Nature 230, 412 (1971). https://doi.org/10.1038/230412a0
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DOI: https://doi.org/10.1038/230412a0