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  1. 1987-01-01
  2. In this concise and fascinating account, Paul DeBach traces the historical background of biological control and examines in detail some of the most famous examples of the discovery abroad of new natural enemies and their importation into the US and elsewhere to achieve successful biological...
  3. Excerpt from Neem's Potential in Pest Management Programs: Proceedings of the Usda Neem Workshop, Beltsville, Maryland, April 16-17, 1990 In 1974-75, a group at Columbia University in New York reported the chemical identification of portions of the azadirachtin and salannin molecules responsible...