Letters

01 May 1979
Comments Letters A symbol for individuals not adult males The present biological symbols ♂ and ♀ indicate the two sexes, male and female. The suggested introduction of a third symbol {Brit. Birds 71: 544-545) seems strangely illogical. If the...
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Reviews

01 May 1979
Comments Reviews The Herons of the World. By Jame s Hancock and Hugh Elliott. London Editions, London, 1978. 304 pages; 61 colour paintings by Robert Gillmor and Peter Hayman, and line-drawings by Robert Gillmor. £46-00 At first sight, this is an elegant illus...
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