@book{17813,
	author = {Telford, W. M. and Geldart, L. P.},
	title = {Applied geophysics / },
	publisher = {Cambridge University Press, },
	year = {1990.},
	address = {New York : },
	edition = {2nd ed.},
	url = {http://www.loc.gov/catdir/description/cam041/88038761.html}
}