@book{149158,
	author = {Phillips, Jeffrey D. and Duval, Joseph S. and Geological Survey (U.S.)  },
	title = {National geophysical data grids},
	publisher = {U.S. Dept. of the Interior, U.S. Geological Survey},
	year = {1993.},
	series = {U.S. Geological Survey digital data series},
	address = {[Reston, VA]},
	note = {Title from title screen.}
}