Gregor, Howard F <br/><br/>
Geography of agriculture :  themes in research, / 
Howard F. Gregor 
 - Englewood Cliffs, N.J. :  Prentice-Hall,  1970 
 - ix, 181 p. :  ill., maps ;  23 cm. 
 - Foundations of economic geography series .
<br/><br/>Includes bibliographical references 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural geography