Chela, Kartar Singh <br/><br/>
Crop rotations 
Chela, Kartar Singh 
 - Ludhiana  Punjab Agriculture University  1975 
 - 47 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture - India - Punjab<br/>Crops and climate
<br/><br/><label>Dewey Class. No.: </label>338.1095455