| 000 | 004870000a22001450004500 | ||
|---|---|---|---|
| 020 | _a0306363011 | ||
| 082 | _a620.8 THO | ||
| 100 | _aThomas, William A | ||
| 245 | _aIndicators of environmental quality: proceedings of a symposium held during the AAAS meeting in Philadelphia, Pennsylvania, December 26-31, 1971 | ||
| 260 | _aNewyork, Plenum press | ||
| 260 | _c1972 | ||
| 300 | _a269 | ||
| 650 | _aEnviornmental quality-congresses/plant indicator-ecological aspects | ||
| 942 | _cBK | ||
| 999 |
_c362231 _d362231 |
||