Livres associés

Vollständige Naturgeschichte der schädlichen Forstinsekten : ein Handbuch für Forstmänner, Cameralisten und Dekonomen

Ueber den unmittelbaren nutzen der insekten.

A treatise on some of the insects of New England which are injurious to vegetation

Some south Indian insects and other animals of importance considered especially from an economic point of view

• The Stephen A. Forbes collections at the Illinois Natural History Survey, 1858-1994 : Annual report 1994.
  Auteur(s): Forbes, Stephen Alfred
• Some important insects of Illinois shade trees and shrubs
  Auteur(s): Forbes, Stephen Alfred
• A preliminary report on the aquatic invertebrate fauna of the Yellowstone National Park, Wyoming and of the Flathead Region of Montana.
  Auteur(s): Forbes, Stephen Alfred

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