00305nam a2200109Ia 4500008004100000082001800041100002200059245005100081260003400132300001000166650001900176140113s9999    xx            000 0 und d  a631.524.86 L8  a" Russell, G. E."  aPlant breeding for pest and disease resistance  b"London : Butterworths, 1978"  a485p.  aPlant breeding