| 000 | 00509nam a2200193Ia 4500 | ||
|---|---|---|---|
| 008 | 230524s9999 xx 000 0 und d | ||
| 040 | _cUDSM | ||
| 050 | _aQA248.3.I5 | ||
| 245 | 0 | _aInstruction in arithmetic: twenty-fiftth yearbook | |
| 260 | _aWashington, D.C. | ||
| 260 | _bThe National Council of Teachers of Mathematics | ||
| 260 | _c1960 | ||
| 300 | _aviii,366p. | ||
| 300 | _c23cm. | ||
| 650 | _aArithmetic | ||
| 700 | _aill. | ||
| 942 | _2Library of Congress Classification | ||
| 942 | _cBook | ||
| 999 |
_c43715 _d43715 |
||