004160000a22001210004500060000800000082001500008100002100023245015600044260003900200260000900239300000800248650003800256  a115  a631.53 HOD  aHodgson, Ralph E  aGerm plasm resources : a symposium presented at the Chicago meeting of the American association for the advancement of science, 28 - 31, December, 1959  aNew Delhi, Radha Krishna Prakashan  c1961  a377  aGerm plasm resources - congresses