Insecticides of plant origin : developed from a symposium sponsored by the Division of Agrochemicals of the American Chemical Society at the Third Chemical Congress of North America (195th National Meeting of the American Chemical Society), Toronto, Ontario, Canada, June 5-11, 1988 / [edité par] J.T. Arnason,... B.J.R. Philogène,... Peter Morand,... / Washington (D.C.) : American Chemical Society , cop. 1989