00274nam a22001097a 4500003000400000008004100004082001100045100002100056245004000077260003900117300000800156OSt240702b        |||||||| |||| 00| 0 eng d  a631.53  aFilor, Walter R.  aPrinciple  of Cultivars Development  aMacMillion, NYbUBSPD, Patnac1987  a536