000 00317nam a22001097a 4500
999 _c610918
_d610918
020 _a9789353167684
082 _a600
_bAGR.S
100 _aAgrahari,Ravi P
245 _aScience and technology
_b:For civil service preliminary and main examinations
260 _aMc Graw hill education
_bChennai,
_c2020.
942 _cBK