000 00296pam a2200145 a 4500
020 _c
041 _aeng
082 _bHAR
100 _aHarle, JB.
245 _aGravity
_hTextual Documents
250 _a2003.
260 _aNew Delhi
_bPearson Education
300 _a382 pg .
930 _a7879
999 _c84789
_d84789