Agriculture people and the land  : teacher's guide 
Prepared by social science staff of the educational research council of America 
 - 2nd ed. 
 - Boston:  Allyn and Bacon,  1975. 
 - iii,249p. 
<br/><br/><br/>eng 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture-Research
<br/><br/><label>Dewey Class. No.: </label>630.7  / AGR