كتب ذات صلة

Scab disease of apples ...

• Handbook of Canadian spring wheat varieties J.G.C. Fraser and A.G.O. Whiteside.
  المؤلفون: Fraser, J. G. C.
• The control of the pine needle scale in the Prairie provinces by L.O.T. Peterson.
  المؤلفون: Peterson, L. O. T.
• Tobacco growing in British Columbia (preliminary notes)
  المؤلفون: Charlan, F.