000			00346nam a2200145Ia 4500
008			140317s9999 xx 000 0 und d
082			_a333.7
100			_aAvery,T.E.
245			_aNatural resources measurements.2nd ed.
260			_aN.Y. _bMcGraw-Hill _c1975
300			_a339
650			_aEconomics
653			_aEconomics
942			_2ddc _cBK
999			_c7415 _d7415