000 004560000a22001690004500
008 140223b1981 xxu||||| |||| 00| 0 eng d
041 _aeng
080 _aX.17 M1
082 _aX.17 M1
100 _aPage Talbot
245 _aConservation and economic efficiency: Approach to materials policy
260 _aBaltimore
_bJ Hopkins Univ
_c1981
440 _aResources for the future
650 _aConsumption
650 _aEconomics
650 _aX:271
999 _c162402
_d162402