| 000 | 00561nam a2200181 a 4500 | ||
|---|---|---|---|
| 001 | sulb36886 | ||
| 008 | 130401s1989 ii a b 001 0 eng | ||
| 020 | _a8170891019 | ||
| 040 |
_aBD-SySUS _cBD-SySUS |
||
| 082 | 0 | 0 |
_a363.7 _222 |
| 100 | 1 | _aSingh, H.S. | |
| 245 | 1 | 0 |
_aPrinciples of environmental conservation / _cH.S. Singh. |
| 260 |
_aDehra Dun : _binternational book distributors, _cc1989 |
||
| 300 |
_avi, 273 p. : _bill. ; _c18 cm |
||
| 504 | _aIncludes bibliographical references and index. | ||
| 650 | 0 | _aecosystem | |
| 650 | 0 | _aEnvironmental protection | |
| 999 |
_c12557 _d12557 |
||