كتب ذات صلة

The toxic property of sulphur

The shot hole borer

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.

• The Stephen A. Forbes collections at the Illinois Natural History Survey, 1858-1994 : Annual report 1994.
  المؤلفون: Forbes, Stephen Alfred
• Some important insects of Illinois shade trees and shrubs
  المؤلفون: Forbes, Stephen Alfred
• The Russian thistle in Illinois
  المؤلفون: Morrow, G. E.

• A study of soybean varieties with reference to their use as food
  المؤلفون: Woodruff, Sybil ,  Klaas, Helen
• A study of the factors influencing the improvement of the potato
  المؤلفون: East, Edward M.
• Soil bacteria and phosphates
  المؤلفون: Hopkins, Cyril G. ,  Whiting, Albert L.