000 00296nam a22000977a 4500
100 _aLopez, Rica S.
245 _aProblems Encountered by the Secondary Science Teachers in all the National High Schools in Baler and San Luis
260 _aAurora
_bASCOT
_c2005
300 _ap. 30
_billus.
942 _cCR
999 _c3353
_d3353