000			00375nam a2200133Ia 4500
005			20260329235655.0
008			260329s9999||||xx |||||||||||||| ||und||
082			_a500.76 Ag15S
100			_aAgrahari,Ravi P.
245		0	_aScience and technology: for civil service preliminary and main examinations
250			_a4ed
260			_aChennai _bMcGraw hill _c2020
942			_cBK
999			_c286621 _d286621