Tetrastichus Brevistigma Gahan
| Title | Tetrastichus Brevistigma Gahan PDF eBook |
| Author | Albert Ronald Merz |
| Publisher | |
| Pages | 786 |
| Release | 1939 |
| Genre | Agricultural experiment stations |
| ISBN |
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Tetrastichus Brevistigma Gahan
| Title | Tetrastichus Brevistigma Gahan PDF eBook |
| Author | Paul A. Berry |
| Publisher | |
| Pages | 12 |
| Release | 1938 |
| Genre | Elm |
| ISBN |
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Insects
| Title | Insects PDF eBook |
| Author | |
| Publisher | |
| Pages | 28 |
| Release | 1947 |
| Genre | Government publications |
| ISBN |
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Handbook of Biological Control
| Title | Handbook of Biological Control PDF eBook |
| Author | T. W. Fisher |
| Publisher | Elsevier |
| Pages | 1073 |
| Release | 1999-09-20 |
| Genre | Science |
| ISBN | 0080533019 |
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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
| Title | Circular - United States Department of Agriculture PDF eBook |
| Author | United States. Dept. of Agriculture |
| Publisher | |
| Pages | 842 |
| Release | 1938 |
| Genre | Agriculture |
| ISBN |
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Experiment Station Record
| Title | Experiment Station Record PDF eBook |
| Author | U.S. Office of Experiment Stations |
| Publisher | |
| Pages | 1100 |
| Release | 1937 |
| Genre | Agricultural experiment stations |
| ISBN |
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Experiment Station Record
| Title | Experiment Station Record PDF eBook |
| Author | United States. Office of Experiment Stations |
| Publisher | |
| Pages | 2162 |
| Release | 1939 |
| Genre | Agricultural experiment stations |
| ISBN |
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