000			00309nam a2200109Ia 4500
008			130130s9999 xx 000 0 und d
082			_a388.1 HEA
100			_aHeady, Earl O.
245			_aEconomics of agricultural production and resource use / Earl O. Heady
260			_aPrentice Hall
650			_aAgriculture
999			_c30329 _d30270