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| 008 | 991125c19901976mx 000 0 spa u | ||
| 020 | _a0-02-946117-0 | ||
| 035 | _a027400 | ||
| 050 | 0 | 4 |
_aLB 1028 _bG37 1990 |
| 100 | 1 | _aGay, L.R. | |
| 245 | 1 | 0 |
_aEducational research: _bcompetencies for analysis and application |
| 250 | _a3a ed. | ||
| 260 |
_aSingapur : _bMerrill, _c1990 |
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| 300 |
_a569 p. ; _c24 cm. |
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| 650 | 4 |
_aEducación - _xInvestigación |
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_aLOGICAT _b20 _c20040112 _lCIA01 _h1405 |
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_aALEPH14 _b30 _c20051220 _lCIA01 _h1416 |
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