McColly, Howard Franklin,  1902- <br/><br/>
Introduction to agricultural engineering 
H. F. McColly, J. W. Martin 
 - New York  McGraw-Hill Book  1955 
 - 553 p. : ill. ; 24 cm. 
<br/><br/><label>LCCN: </label>54-011763 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural engineering