00481nam a2200193Ia 4500008004100000040000600041041001200047082001100059082001200070100001800082245003400100245001800134260001400152260002700166260000900193300005500202300001000257650002000267141004s9999    xx            000 0 und d  ca  aEnglish  a631.52  bALL/PR   aRW    Allard   aPrinciples of plant breeding   cRW    Allard   aNew York   bJohn Wiley & sons, INC  c1960  a485p                                                b21cm   aPlant breeding