| 000 | 00377nam a2200121Ia 4500 | ||
|---|---|---|---|
| 100 | _aUNESCO | ||
| 942 | _cBK | ||
| 654 | _a | ||
| 245 |
_aNew trends in chemistry teaching--vol-1 (1964--1965) # New trends in chemistry teaching--vol-2 # New trends in Chemistry teaching _bVol 2 |
||
| 260 |
_aUnesco _bUnited Nations _c1968 # 1969 |
||
| 082 | _a540.7 | ||
| 300 |
_bPb _c27cm _ax, 408 |
||
| 999 |
_c410724 _d410724 |
||
| 041 | _aeng | ||