@book{52611,
	author = {Davis, Raymond E. and Foote, Francis S.},
	title = {Tratado de topografía / },
	publisher = {Aguilar, },
	year = {1979]},
	series = {Ciencia y técnica},
	address = {[Madrid : },
	edition = {[3ª ed., 3ª reimp.].}
}