000 00341pam a2200157a 44500
008 230515b1990 xxu||||| |||| 00| 0 eng d
020 _aNULL
041 _aENGLISH
082 _a630
100 _aGUPTA S G
245 _aWORKED EXAMPLES
250 _a2
260 _aDELHI
_bPITMAN AND SONS LTD
_c1990
300 _a344
650 _aNULL
999 _c651451
_d651451