000 00493nam a2200145Ia 4500
008 140208s9999 xx 000 0 und d
044 _aUnited Kingdom
080 _a631.52 T17B
100 _aThomas, Mary
245 _aBack crossing : the theory practice of the backcross method in the breeding of some non - cereal crops
_cMary Thomas
260 _bCommonwealth Plant Breeding
_aCambridge
_c1952
300 _avi, 136 p.; 22cm.
490 _a(Technical communication; no. 16)
942 _2udc
_cGB
999 _c568
_d568