@book{96540,
	author = {Branson, Edwin Bayer and Tarr, William Arthur},
	title = {Elementos de geología},
	publisher = {Aguilar},
	year = {1959.},
	address = {Madrid},
	edition = {2da. ed.},
	note = {Translation of Introduction to geology, 3d ed. (1952) rev. by C. C. Branson and W. D. Keller.}
}