00322nam a2200109Ia 4500008004100000082001400041100002100055245004200076260006500118300001000183650001900193140113s9999    xx            000 0 und d  a631.52 M2  a" Broertjes, C."  aInduced variability in plant breeding  b"Center for agricultural publishing and documentation, 1982"  a143p.  aPlant breeding