000 00293nam a2200109Ia 4500
001 MPKV102900
008 120911s9999 xx 000 0 und d
245 _aAdvance in Agronomy Vol. 44
_cBrady N,.C,.;
260 _bSan Diego Academic Press
_c1990
300 _axvii
_b284pp
365 _b1304=10 /-
999 _c66363
_d66363