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020 _a0205145795
_c
_20.95
040 _aMAIN
041 _aEnglish
082 _a371.25
_bBEI
100 _aBeichner, Robert J. and Dobey, Daniel C.
245 0 _aEssentials of classroom teaching elementary science
260 _aBoston
_b; Allyn And Bacon
_c, 1994
300 _ax,189p.
650 _aClassroom
650 _aEducation
942 _cBK
999 _c123596
_d123596