@book {,
	title = {Geolog{\'\i}a de la Cordillera Occidental y Altiplano al oeste del Lago Titicaca-sur del Per{\'u}},
	volume = {Bolet{\'\i}n No},
	year = {1993},
	publisher = {INGEMMET, Rep{\'u}blica del Per{\'u}, Sector Energ{\'\i}a y Metal{\'u}rgico},
	organization = {INGEMMET, Rep{\'u}blica del Per{\'u}, Sector Energ{\'\i}a y Metal{\'u}rgico},
	type = {Geological},
	address = {Lima},
	keywords = {ilave paper map topographic IGM IGN},
	author = {Palacios, O. and J. de la Cruz and N. de la Cruz and B. A. Klinck and R. A. Allison and M. P. Hawkins}
}