@book{18323,
	author = {Palen, Stacy E.},
	title = {Schaum's outline of theory and problems of astronomy /},
	publisher = {McGraw-Hill,},
	year = {2001},
	series = {Schaum's outline},
	address = {New York :},
	note = {Description base on printed version},
	url = {http://mhebooklibrary.com.libraryumpsa.idm.oclc.org/doi/book/10.1036/0071364366}
}