@book{7645,
	author = {International Astronomical Union Symposium and Evans, David S., ed. and International Astronomical Union },
	title = {External galaxies and quasi-stellar objects},
	publisher = {D. Reidel Publishing},
	year = {1972},
	series = {IAU Symposium; no. 44},
	address = {Dordrecht},
	note = {Donated by Mrs. Bappu}
}