000 00298nam a2200121Ia 4500
008 140317s9999 xx 000 0 und d
082 _a633
100 _aDyke,G.V.
245 _aComparative experiments with field crops.
260 _aLondon
_bButterworths.
_c1974
300 _a211
942 _2ddc
_cBK
999 _c6480
_d6480