Onion Disease Guide
plant protection
author : Kevin E. Conn
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Plant Protection. Book1 Pests, Diseases and Weeds
Kevin E. Conn
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Weed Ecology in Natural and Agricultural Systems
Kevin E. Conn
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Biological Management of Diseases of Crops
Kevin E. Conn
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Basic Guide to Pesticides Their Characteristics and Hazards
Kevin E. Conn
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Weed Biology and Control
Kevin E. Conn
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Small-scale aquaponic food production
Kevin E. Conn
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Pesticide Application Methods
Kevin E. Conn
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Vegetable Diseases A Colour Handbook
Kevin E. Conn
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