TY  - BOOK
ED  -  Food and  Agriculture Organization of the United Nations.
TI  - Tillage and seedng practices and machines for crop production in sem iarid areas
PY  - 1971///
CY  - Rome : 
PB  - FAO, 
KW  - Tillage
KW  - Sowing
KW  - Farm equipment
N1  -  Includes bibliographical references
ER  -