| 000 | 004420000a22001570004500 | ||
|---|---|---|---|
| 008 | 140223b1981 xxu||||| |||| 00| 0 eng d | ||
| 041 | _aeng | ||
| 080 | _aX:271 M1 | ||
| 082 | _aX:271 M1 | ||
| 100 | _aPage Talbot | ||
| 245 | _aConservation and economic efficienty: Approach to materials policy | ||
| 260 |
_aBaltimore _bJ Hopkins Univ _c1981 |
||
| 440 | _aResources for the future | ||
| 650 | _aEconomics | ||
| 650 | _aNatural Resources | ||
| 999 |
_c238548 _d238548 |
||