00528nam a22001937a 4500003000600000005001700006008004100023020001500064040001400079082001500093100002100108245006400129260003200193300003500225500001800260650001900278650001500297700002200312GCWUF20210302221541.0210302b        xxu||||| |||| 00| 0 eng d  a0471600849  bENGcMAIN  a632.5bASH  aAshton, Floyd M.  aWeed science : principles and practices /cAshton, Floyd M.  aNew York :b Wiley, c1991.  avi 466 p.:bill;c23 cm.fH.B.  aInclude Index  aWeeds--Control  vHerbicides  a Monaco, Thomas J