000 00280nam a2200121Ia 4500
008 161121s9999 xx 000 0 und d
100 _aHEADY.E.O
245 0 _aEconomics of Agrl. Prod. and Resource Us
260 _cPrentice Hall
365 _b0
650 _aNIL
942 _cBK
999 _c101637
_d101637