International bibliography on cropping systems 1977 / 
Mila Medina Ramos; compiler 
 - Manila :  International Rice Research Institute,  1977 
 - xv, 239 p. :  30 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Bibliographies --Crop production<br/>Agronomy--Soil--Economic aspects
<br/><br/><label>Dewey Class. No.: </label>016.63153  / RAM