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Tetrastichus Brevistigma Gahan

Tetrastichus Brevistigma Gahan PDF Author: Albert Ronald Merz
Publisher:
ISBN:
Category : Agricultural experiment stations
Languages : en
Pages : 786

Book Description

Tetrastichus Brevistigma Gahan

Tetrastichus Brevistigma Gahan PDF Author: Albert Ronald Merz
Publisher:
ISBN:
Category : Agricultural experiment stations
Languages : en
Pages : 786

Book Description

Tetrastichus Brevistigma Gahan

Tetrastichus Brevistigma Gahan PDF Author: Paul A. Berry
Publisher:
ISBN:
Category : Elm
Languages : en
Pages : 12

Book Description

Tetrastichus Brevistigma Gahan, a Pupal Parasite of the Elm Leaf Beetle

Tetrastichus Brevistigma Gahan, a Pupal Parasite of the Elm Leaf Beetle PDF Author: P. A. Berry
Publisher:
ISBN:
Category :
Languages : en
Pages : 12

Book Description

Tetrastichus Brevistigma Gahan

Tetrastichus Brevistigma Gahan PDF Author: George Washington Craddock
Publisher:
ISBN:
Category : Elm
Languages : en
Pages : 12

Book Description

Insects

Insects PDF Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 28

Book Description

Handbook of Biological Control

Handbook of Biological Control PDF Author: T. W. Fisher
Publisher: Elsevier
ISBN: 0080533019
Category : Science
Languages : en
Pages : 1073

Book Description
For many years the use of chemical agents such as pesticides and herbicides has been effective in controlling the many varieties of pests that infest both agricultural crops and backyard gardens. However, these pests are gradually becoming resistant to these agents, because the agents themselves are acting as selective factors making the pests better and better able to resist and persist. As a result, the use of biological controlling agents is increasing. This book is a comprehensive and authoritative handbook of biological control.

Circular - United States Department of Agriculture

Circular - United States Department of Agriculture PDF Author: United States. Dept. of Agriculture
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 842

Book Description

Experiment Station Record

Experiment Station Record PDF Author: U.S. Office of Experiment Stations
Publisher:
ISBN:
Category : Agricultural experiment stations
Languages : en
Pages : 1100

Book Description

Experiment Station Record

Experiment Station Record PDF Author: United States. Office of Experiment Stations
Publisher:
ISBN:
Category : Agricultural experiment stations
Languages : en
Pages : 2162

Book Description

News Letter

News Letter PDF Author: United States. Bureau of Entomology and Plant Quarantine
Publisher:
ISBN:
Category : Beneficial insects
Languages : en
Pages : 26

Book Description

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