000 00604nam a2200193Ia 4500
919 _a127970
082 _a630.05
_bN49.51 "SER"
245 _aAdvances in agronomy - v.51
_b
_ced. by L. Donald Sparks.
260 _bAcademic Press
_c1993
700 _aSparks, Donald L., ed.
999 _c123210
_d123210