| | Theory of a tillage wedge and its applications by Pg Svechnikov, Vv Blednykh Published 2013 by Logos Verlag Berlin 2013-11-28 ISBN-13: 978-3-8325-3550-6, ISBN: 3-8325-3550-0
"This book will be useful to the work of scholars and practitioners, design and engineering organizations, researchers engaged in tilling the soil."
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