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008 240712s9999 xx 000 0 und d
020 _a8183161146
041 _aeng
082 _a371
_bvan
100 _aVanaja, M.
245 _aEducation technology
260 _aNew Delhi
_b Neelkamal Pub.
_c2010
300 _a300
999 _c25775
_d25775