كتب ذات صلة

Effects of acid deposition on the emergence of blackflies (Diptera: Simuliidae) over 50 years from Algonquin Park streams

Control of black flies in Canada

An ecological study of the mayfly Chirotenetes

Notes in the pupation of the house-fly (Musca Domestica) and its mode of overwintering

• Dipt�eres piqueurs du Canada qui s''attaquent �a l''homme et au b�etail
  المؤلفون: Wood, D. M.

• Wild oat gene pool : a collection maintained by the Canada Department of Agriculture : Canada Avena (CAV)
  المؤلفون: Baum, Bernard R.
• What you should know about seeds.
  
• Utilizing harvested forages in the aspen parklands of Western Canada.