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| 001 | 2069 | ||
| 090 | _a2069 | ||
| 100 | _a20170516 frey50 | ||
| 101 | _aeng | ||
| 102 | _aUS | ||
| 200 | _aunified modern mathematics | ||
| 210 |
_aColumbia _cTeachers college, Columbia university _d1971 |
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| 215 |
_a259 p. _d21 cm |
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| 606 | _aexercices math. | ||
| 099 | _tMON | ||
| 225 | _vcourse 4 part 2 | ||