000 | 00339nam a22001697a 4500 | ||
---|---|---|---|
020 | _a- | ||
022 | _a- | ||
082 |
_a511.2 _bSWA |
||
100 | _aSwain | ||
245 |
_aUnderstanding Arithmetic _b- _cSwain L. Robert |
||
250 | _a1957 | ||
260 |
_aAmerica _bAmerica _c1957 |
||
300 |
_a268 _e- |
||
500 | _a- | ||
700 | _a- | ||
942 | _cBK | ||
999 |
_c15786 _d15786 |