000 00326nam a22001457a 4500
020 _a9780143061984
082 _a001.076 OBR - E
100 _aDerek O'Brien's
245 _aEssential Knowledge
250 _a1 ed
260 _aNew Delhi
_bPenguin Books
_c2006
300 _a341
650 _aGeneral Knowledge
942 _cBK
999 _c21641
_d21641