00420    a2200133   4500020001600000082001500016100001600031245012300047250001200170260003400182300002400216650001000240650003600250  a8187167215X  a632.5bGUP  aGupta, O.P.  aModern weed management bwith special reference to agriculture in the tropics and subtropicsb a text book and manual   a2nd ed.  aJodhpurbAgrobiosc2004g2004  a[xxiii],540p.c25cm  aWeeds  aPlant injuries, diseases, pests