@book{94180,
	author = {Álvarez Guerra, Enrique, and Colina Pérez, José María,},
	title = {Olimpiada y miniolimpiada de química de Cantabria 2021 :},
	publisher = {Ediciones Universidad Cantabria,},
	year = {2021.},
	series = {Colección manuales ;},
	address = {Santander :},
	url = {https://login.zproxy.cun.edu.co/login?url=https://www.digitaliapublishing.com/a/112029/}
}