00269nam a2200097 a 450000500170000008200160001710000190003324500570005226000370010930000250014620251203091427.0  a581.16bBUR  aBurbidge, F.W.  aCultivated PlantsbTheir Propagation and Improvement  aJaipurbPrakash Publishersc1977  axii,618p.c24 cm. HB