00269nam a2200109 a 450000500170000008200210001710000060003811000160004424500460006026000310010630000220013720251202164143.0  a581.158,bD, cho  d_  aChopra, VL.  aGenetic manipulation for crop improvement  aDelhibOxford & IBH.c1985  axvi, 326p, 23 cm.