000 00397nam a2200157Ia 4500
008 130223s9999 xx 000 0 und d
080 _a633:575.1
100 _aRichens, R.H.
245 _aCommonwealth Bureau of plant breeding and genetics
260 _aCambridge
260 _c1969
300 _a1-24 p.
440 _aCambridge University School of
901 _pS17156
942 _cB
_2udc
999 _c118310
_d118310