004360000a22001570004500020001500000060000800015082001500023100002300038100001500061245004300076260002600119260000900145300000800154490003800162650007800200 a0851987087 a100 a634.04 HAM aHammerschlag, F.A. aLitz, R.E. aBiotechnology of perennial fruit crops aUK, CAB International c1992 a550 aBiotechnology in Agriculture No.8 aFruit crops- perennial/ fruit crops - protoplasts/ fruit crops - haploidy