Ojha, T.P., Principles of agricultural engineering. T.P.Ojha and A.M. Micheal - 13th ed. - New Delhi : Jain Brothers, 2020 - 1060 p. ill. 26 cm. ISBN: 9788183602129 LCCN: 55059311 Subjects--Topical Terms: Mechanical engineering.Agricultural engineering. Dewey Class. No.: 631.3 / OJH