Tillage and seedng practices and machines for crop production in sem iarid areas.   

 - Rome :   FAO,   1971. 
 - viii, 53 p. :    ill. ;    23 cm. 
 - FAO Agricultural Development Paper ;   no.92 .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Tillage.--------<br/>Sowing.--------<br/>Farm equipment.--------