A study to assess the changing trend of the cultivator towards hybrid maize in district Ludhiana under Intensive Agricultural District Programme 

 - Ludhiana  Intensive Agricultural District Programme, Operational and Analytical Research  1971 
 - ii, 10 p. 
 - Research report series .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Maize breeding<br/>Agricultural extension work - India
<br/><br/><label>Dewey Class. No.: </label>633.17