@book{13189,
	author = {Zim, Herbert Spencer, and Shaffer, Paul R.},
	title = {Rocks, gems, and minerals :},
	publisher = {St. Martin’s Press,},
	year = {c2001.},
	series = {A Golden guide from St. Martin’s Press},
	address = {New York :},
	edition = {Rev. and updated },
	url = {http://www.loc.gov/catdir/bios/hol055/2001271737.html}
}