000 00398nam a2200145Ia 4500
082 _a338.10184
_bAGR
100 _aAgrawal, R. C.
245 _aOperation research : methods for agricultural decisions.
260 _aAmes
_bIowa State Uni. & American Concrete Inst.
_c1972
300 _ax,303p.
500 _aENG
700 _aHeady, Earl O.
890 _aUnited States
999 _c24541
_d24541