@book{21256,
	author = {Almanza Chuchullo, Fortunata Albina and Pinto Tapia, Miguel Ángel},
	title = {La Yupana Inka en la construcción del pensamiento numérico /},
	publisher = {Dann'ys Graff,},
	year = {2017.},
	address = {Cusco ;}
}