| 000 | 00447cam a22001097a 4500 | ||
|---|---|---|---|
| 008 | 180718b1956 xxu||||| |||| 00| 0 eng d | ||
| 082 | _aYA08 Un3 | ||
| 245 |
_aUNESCO source book for science teaching _cby United Educational, Scientific and Cultural Organisation |
||
| 260 |
_aParis _bUnited Educational, Scientific and Cultural Organisation _c1956 |
||
| 300 | _a220p. | ||
| 700 | _aFrance.United Nations Educational, Scientific and Cultural Organisation | ||
| 999 |
_c426758 _d426758 |
||