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This booklet is for commerical greenhouse growers, farmers, serious gardeners and anyone who wishes to maintain a low ecological profile by reducing their use of chemical pest-control substances. It includes the general principals of biological pest control and agents of biological pest control.

65 pages, illustrated

Detalles de publicación

  • Publicado: 1995
  • Editor: Green Spot
  • Dewey Decimal: 628
  • Librería ECHO: 628 GRE