Permanent beds and rice-residue management for rice-wheat systems in the Indo-Gangetic Plain / 
editors: E. Humphreys & C.H. Roth. 
 - Canberra :  ACIAR,  2008. 
 - ACIAR proceedings ;  no. 127 .
<br/><br/> "Proceedings of a workshop held in Ludhiana, India, 7-9 September 2006". - - t.p. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cropping systems--India.<br/>Double-cropping--India.<br/>Multiple cropping--India.<br/>Field crops--India.