000 00275nam a2200121Ia 4500
008 191031s9999 xx 000 0 und d
100 _aEarl.O. Heady
245 0 _aFarm management economics
260 _bPrentice hall
260 _c1965
365 _b66.17
942 _cBK
999 _c196000
_d196000