00517nam a2200193Ia 4500001001000000003000500010008004100015010001100056040000900067082001700076100001500093245007300108260003100181300001100212440003600223650002900259700001800288700001700306Para_2432CHAP220125s1987    xx            000 0 und d  a200966  cCHAP  aPA 632.58 A8  aAuld, B.A.  aWeed control economics  /c by B. A. Auld, K. M. Menz, C. A. Tisdell  aLondon  :b Academic Press  a177 p.  aApplied botany and crop science  aMalas hierbas x Control  aMenz,  K. M.   aTisdell C.A.