@book{233450,
	author = {DRTC},
	title = {DRTC annual seminar on 9 : abstracting, indexing, and revieuring periodicals pattern of use of documents by specialists comparative study of schemes for library classification pt . 1 : paper},
	publisher = {DRTC},
	year = {1971},
	address = {Bangalore},
	note = {DRTC}
}