@book{9433,
	author = {Fredrick, Laurence W. and Baker, Robert Horace,},
	title = {An introduction to astronomy /},
	publisher = {Van Nostrand},
	year = {1974},
	address = {New York,},
	edition = {8th ed.},
	note = {First-7th ed., by R. H. Baker (7th ed., with L. W. Fredrick)}
}