Robertson, C. A. <br/><br/>
Effectiveness of crop demonstrations :  a study of wheat demonstrations in Aligarh district, U.P. / 
C. A. Robertson 
 - Delhi :  Agricultural Economics Research Centre,  1964 
 - Intensive Agricultural District Programme Studies No.1 .
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture & research--Crop demonstrations--India<br/>Agricultural extension--Wheat--Aligarh District, Uttar Pradesh, India
<br/><br/><label>Dewey Class. No.: </label>630.7  / AERC