000 | 00350nam a2200145Ia 4500 | ||
---|---|---|---|
001 | 83833 | ||
008 | 170722s9999 xx 000 0 und d | ||
100 | _aServais, W. | ||
245 | _aTEaching school mathematics / | ||
260 |
_bPenguin books , _c1971. |
||
300 |
_a308 p. _c21cms |
||
490 | _aUNESCO Source Book | ||
700 | _aVarga, T. | ||
942 | _cGEN | ||
999 |
_c93186 _d93186 |