Roth, Lawrence O. <br/><br/>
Introduction to agricultural engineering  a problem-solving approach 
Lawrence O. Roth and Harry L. Field 
 - 2nd ed. 
 - New York  Chapman and Hall  1991 
 - 346 p. : ill. ; 24 cm. 
<br/><br/><label>ISBN: </label>0412069911  RM143.29 
<br/><br/><label>LCCN: </label>91-31458 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural engineering