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Natural control of Helicoverpa armigera in smallholder crops in East Africa /

Bibliographic Details
Main Author:	Berg, Henk van den, 1962-
Format:	Thesis Book
Language:	English
Language Notes:	Added p.: Summary in Dutch.
Published:	[Wageningen] : [publisher not identified], [1993?]
Subjects:	Helicoverpa armigera > Biological control > Africa, East. Katoenrups. Biologische bestrijding.

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