000 00341nam a2200145Ia 4500
020 _a0748717382
082 _b1342
_a540
100 _a"Ramsden, E.N."
245 0 _aCalculatons for GCSE Chemistry
260 _bStanley Thornes
_aNA
_c1987
300 _a95
944 _cTR
999 _c758226
_d758226