@mastersthesis {,
	title = {Cronolog{\'\i}a y Corolog{\'\i}a de la Cuenca del R{\'\i}o Caman{\'a}-Majes-Colca, Arequipa},
	year = {1989},
	school = {Universidad Cat{\'o}lica Santa Mar{\'\i}a.},
	type = {Licenciatura Thesis},
	address = {Arequipa},
	author = {Vera Cruz, Pablo de la}
}