000 00492 a2200193 04500
001 1018
008 050512s1959 eng d
041 0 _aeng
045 _a1959
082 0 _a540.076
_bF893ch
100 4 0 _aFrey, Paul R.
245 0 _aChemistry problems and how to solve them/
_cPaul R. Frey
260 4 _aNew York:
_bBarnes
_c1959.
300 4 _a228 p.
650 _aquĆ­mica
650 _aquĆ­mica
_z-problemas
942 _2ddc
_cBK
999 _c1534
_d1534