000
00327nam a2200133Ia 4500
100
_a
Gay, L. R.
020
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0-02-340800-6
250
_a
4th Ed
942
_c
BK
245
_a
Educational Research : competencies for analysis and application
260
_a
Merrill, New york
_c
1992
082
_a
370.78 Gay
300
_a
xxv, 645
999
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67610
_d
67610