00000nam##2200000za#4500 9.645214 CaOODSP 20250506145324 ta 150407|1993||||xxc||||| f|0| 0 eng|d 0-662-20908-7 CaOODSP eng n-cn--- A43-1895/1993E Canada. Agriculture Canada. Natural enemies of pests associated with prairie crops / by D. S. Yu and J. R. Byers, Research Station, Lethbridge, Alberta. Ottawa - Ontario : Agriculture Canada 1993. 30p. : coloured figs., references ; 23 cm. "The aim of this book is to help growers, extension workers, district agriculturalists, and the general public recognize the natural enemies of agricultural pests commonly found in the prairie provinces. Colour photographs are used as a means of identification, supplemented with descriptions of relevant aspects of the life histories of the major natural enemies."--Preface. The aim of this book is to help growers, extension workers, district agriculturalists, and the general public recognize the natural enemies of agricultural pests commonly found in the prairie provinces. Colour photographs are used as a means of identification, supplemented with descriptions of relevant aspects of the life histories of the major natural enemies.--Preface Softcover 94-06 1994-02-11 Crops gcpds Pests gcpds Yu, D. S. Byers, J. R. Ennemis naturels des ravageurs des cultures dans les provinces des Prairies / (CaOODSP)9.678979 Natural enemies of pests associated with prairie crops / (CaOODSP)9.696431 Publication 1895/E