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020 _a01195859
050 _aGV 1507
_b.Sc416 1999 vol.5
082 _aFIL 793.73
_bSc1 1999
245 _aScience crossword and other puzzles :
_benhancement exercises for high school Science /
260 _aMakati City
_bBelgosa media system, Inc,
_c1999.
300 _a48p. :
_bill. ;
_c22cm
650 _aCrosswords
_xScience
650 _aPuzzles
_xScience
830 _aPhysics
830 _aChemistry
830 _aBiology
942 _2lcc
_cBK
999 _c3460
_d3460