@book{25454,
	author = {Zim, Herbert S. and Shaffer, Paul R.},
	title = {Rocks and minerals;},
	publisher = {Golden Press},
	year = {[1961? c1957]},
	series = {A Golden nature guide},
	address = {New York,},
	note = {Includes information on collecting and identifying minerals, and sections on metallic, nonmetallic, gem and rock-forming minerals, and on igneous, sedimentary and metamorphic rocks.}
}