00297nam a2200109 a 450000500170000002000150001708200160003210000230004824500440007126000480011530000240016320251203110101.0  a0521587840  a572.82bHOW  aHowell, Stephen H.  aMolecular genetics of plant development  aCambridgebCambridge University pressc1998  axviii,365p.c23 cm.