| 000 | 00463cam a22001337a 4500 | ||
|---|---|---|---|
| 008 | 180718b1973 xxu||||| |||| 00| 0 eng d | ||
| 082 | _aY Op2/1 | ||
| 245 |
_aScience: a second level course-the earth's physical resources. Block I: Resources and systems _cby Open University |
||
| 260 |
_aWalton Hall _bMilton Keynes, Open University _c1973 |
||
| 300 | _a50p. | ||
| 500 | _aBlock I.Resources and systems | ||
| 650 | _aNatural resources | ||
| 700 | _aOpen, University | ||
| 999 |
_c350903 _d350903 |
||