Maddrell, S.H.P. Insect hormones as possible insecticides. 1st. Ed. Pub. Central Association of Bee-Keepers. 1974
pp.13 wth b/w. figs. 8vo. Fine softback.
The text of a lecture given to the Central Association of Bee-Keepers in Oct., 1973.
£2.50 [Ref: 69257]