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999 _c512
_d512
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020 _a9552306396
082 _a546
_bOPE
_223
100 _aOPEN University of Sri Lanka
245 2 _aA course of studying leading to the degree in bachelor of science level 4, CHU 2123, inorganic chemistry - part 1- main group elements in the periodic table /
260 _aNugegoda
_bOpen University of Sri Lanka
_c1997
300 _a93 p.
942 _cR