Ross, W. Arthur. <br/><br/>
Interpretive science and related information in vocational agriculture;  effective utilization of scientific principles and related information in organized agricultural instruction. 
U.S. Department of the interior, Harold, L. Ickes, secretary. Office of education, J.W. Studebaker, commissioner. 
 - Washington,  U.S. Govt. print. off.,  1936. 
 - v, 27 p.  23 cm. 
 - U.S. Office of education, Vocational education bulletin  no. 191. Agrricultural series  no. 50 .
<br/><br/> "Prepared under the direction of J.A. Linke, chief, agricultural education service, United States Office of education, by W.A. Ross, subject-matter specialist in agricultural education. -Foreword. 
<br/><br/><label>LCCN: </label>e  37000065  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural education.<br/>Agriculture--Study and teaching.
<br/><br/><label>LC Class. No.: </label>LC1045  / .A25 no. 191