| 000 | 00612nam a2200205 a 4500 | ||
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| 003 | MX-MxUPN | ||
| 005 | 20241001063945.0 | ||
| 008 | 991125s1916 xxu r 000 0 eng d | ||
| 035 | _aUPN01000045754 | ||
| 040 |
_aMX-MxUPN _bspa _cMX-MxUPN |
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| 041 | 0 | _aeng | |
| 050 | 1 | 4 |
_aBF321 _bD86 |
| 100 | 1 |
_aDumont, Theron Q. _948862 |
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| 245 | 1 | 4 | _aThe power of concentration |
| 260 |
_aChicago : _bAdvanced Thought, _c1916. |
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| 300 |
_a186 páginas ; _c19 cm. |
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_aAtención _98528 |
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| 710 | 2 |
_aInstituto Nacional de Investigación Educativa (México) _epropietario anterior _928086 |
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| 942 |
_2lcc _cLIBRO |
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_c45754 _d45754 |
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