000 00399nam a2200133Ia 4500
008 241227s9999 xx 000 0 und d
020 _a9789355325556
082 _a620
_bAGR
100 _aAgrahari, Ravi.
245 0 _aScience and technology for civil preliminary and main exam
260 _aNew Delhi :
_bMcgraw Hill Book Company,
_c2016
365 _a825
650 _aEngineering allied operations
999 _c155911
_d155911