| 000 | 00382cam a22001097a 4500 | ||
|---|---|---|---|
| 008 | 180718b1971 xxu||||| |||| 00| 0 eng d | ||
| 082 | _aX9096x4 Un3 | ||
| 245 |
_aECE symposium on problems relating to envirnoment: proceedings _cby Economic Commission for Europe, U.S.A. |
||
| 260 |
_aNew York _bUnited Nations _c1971 |
||
| 300 | _a386p. | ||
| 700 | _aU.S.A. Economic Commission for Europe | ||
| 999 |
_c498825 _d498825 |
||