000 00309nam a2200121Ia 4500
008 191031s9999 xx 000 0 und d
100 _aBroadbent
245 0 _aInvestigation of virus diseases of brassica crops
260 _bCambridge university press
260 _c1957
365 _b15.75
942 _cBK
999 _c194790
_d194790