자원 태그: Biological Control System
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The object of this book is to provide students, practicing agriculturalists and horticulturalists, and other interested persons with a basic introduction to insects as living organisms and to the principles and practices of pest control.
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Since tannins occur as a natural protective system within plants, it is important to understand the different types and their funtions. This paper discusses various parts of tannins and their nutritional value.