000 00335nam a2200133Ia 4500
008 170101s1989 xx 000 0 und d
020 _a521310091
082 _a633.2 PEA
100 _aPearson, C.J
245 0 _aAgronomy of grassland system
260 _aNew York
_bCambridge University
_c1989
300 _a169p.
942 _2ddc
_cBK
999 _c126981
_d126981