كتب ذات صلة

The toxic property of sulphur

R�epression des punaises, des puces, des poux, et des gu�epes

Progress in the control of elm diseases in nurseries

A method of destroying or preventing the growth of Algæ and certain pathogenic bacteria in water supplies.

• Spraying calendar
  المؤلفون: Panton, J. Hoyes
• Weeds of Ontario
  المؤلفون: Panton, J. Hoyes
• Bees in relation to fruit
  المؤلفون: Panton, J. Hoyes

• Supplementary forage crops for the Maritime Provinces
  المؤلفون: Langille, J. E.
• Russian wild ryegrass for western Canada
  المؤلفون: Lawrence, T. ,  Heinrichs, D. H.
• Preparing bees for winter
  المؤلفون: Gooderham, C. B.