TY - BOOK AU - Lal,R. ED - Food and Agriculture Organization of the United Nations. TI - Tillage systems in the tropics : : management options and sustainability implications / SN - 9251037760 PY - 1995/// CY - Rome : PB - Food and Agriculture Organization of the United Nations, KW - Tillage KW - Tropics N1 - "M-53"--T.p. verso; Includes bibliographical references (p. 181-206) ER -