Ramos, Mila Medina <br/><br/>
International bibliography on cropping systems 1977 
compiled by Mila Medina Ramos 
 - Laguna, Philippines  International Rice Research Institute  1979 
 - 239 p. ; 28 cm. 
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cropping systems--Bibliography