004400000a22001690004500020001500000060000800015082001500023100002100038100002000059245003100079260003000110260000900140300000700149490003300156490003000189650005100219  a3489750101  a100  a631.53 NIT  aNitzsche, Werner  aWenzel, Gerhard  aHaploids in plant breeding  aBerlin, Verlag paul parey  c1977  a98  a8cjournal of plant breeding  aJournal of plant breeding  aHaploids - plant breeding/ population genetics