000 00301nam a2200133Ia 4500
100 _a???????, ???? & ???????, ????
020 _a978-81-237-0198-1
250 _a20th ed
942 _cBK
245 _a???? ?? ?????
260 _aNational Book Trust, New Delhi
_c2013
082 _aAgr
300 _a56
999 _c49025
_d49025