000			00412nam a2200157Ia 4500
008			170106s2013||||xx |||||||||||||| ||und||
020			_a9788120346390 _q pbk
041			_aeng
082			_a020 _bSIN
100			_aSingh, Gurdev
245		0	_aInformation sources, services and systems
260			_aDelhi _bPHI Learning _c2013
300			_axviii, 517p. ; 23.5 cm.
650			_aLibrary Science
942			_cBK
999			_c25935 _d25935