00364nam a2200121Ia 4500008004100000082002500041100002200066245003100088260003600119300001000155600004000165650003700205140224s9999    xx            000 0 und d  a631.523.12(047.1) L7  aNitzsche, Werner.  aHaploids in plant breeding  aBerlinbVerlag paul pareyc1977  a101p.  a Werner Nitzsche and Gerhard Wenzel  aPlant breeding,Haploidy-research