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Cover for Petr Konvalina · Alternative Crops and Cropping Systems (Hardcover Book) (2016)

Alternative Crops and Cropping S... (2016)

Cover for Petr Konvalina · Organic Farming: A Promising Way of Food Production (Hardcover Book) (2016)

Organic Farming: A Promising Way... (2016)

Cover for Petr Konvalina · Organic Farming and Food Production (Hardcover Book) (2012)

Organic Farming and Food Production (2012)