000 00330nam a2200097Ia 4500
008 220204s9999 xx 000 0 und d
082 _a636.2
_bUNI
245 0 _aFeasibility of physical system model for evaluating improvement in the cattle and fresh beef industry
260 _aUSA
_bAgricultural Research Service
_c1969
942 _cBK
999 _c22302
_d22302