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Bee flies and bluets: Bombylius (Diptera: Bombyliidae) flower-constant on the distylous species, Hedyotis caerulea (Rubiaceae), and the manner of foraging
KRETISCHE KUNST: Versuch einer Deutung. By GAS Snijder. Berlin, Verlag Gebr. Mann, 1936. pp. 174, and 32 pages of plates. RM. 39.00 (export, RM. 29.25).