000 00455nam a2200157Ia 4500
008 251027s9999 xx 000 0 und d
020 _a9789353160890
082 _a500
_bAGR
100 _aRavi P Agrahari
245 0 _aScience and Technology
_bFor civil services Priliminary and mains examinatin
250 _acopyright
260 _aNew Delhi
_bMcGraw Hill Education
_c2019
300 _aA.I.6-F10
_b23cm
700 _aRavi P. Agrahari
942 _cBK
999 _c128522
_d128522