كتب ذات صلة

The toxic property of sulphur

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.

Insects and insecticides.

• The water-relation between plant and soil
  المؤلفون: Livingston, Burton Edward ,  Hawkins, Lon Adrian
• The influence of calcium, magnesium and potassium nitrates upon the toxicity of certain heavy metals toward fungus spores ...
  المؤلفون: Hawkins, Lon Adrian
• The water-relation between plant and soil
  المؤلفون: Livingston, Burton Edward ,  Hawkins, Lon Adrian