000 00303nam a2200121Ia 4500
008 191031s9999 xx 000 0 und d
100 _aEarl. O.Heady
245 0 _aEconomics of agricultural production and resource use
260 _bPrentice hall
260 _c1964
365 _b15.00
942 _cBK
999 _c196824
_d196824