@book{33971,
	author = {Vallejo, César,},
	title = {Rusia en 1931 :},
	publisher = {www.linkgua-digital.com,},
	year = {2013.},
	series = {Linkgua Historia},
	address = {Barcelona :},
	url = {https://login.zproxy.cun.edu.co/login?url=https://www.digitaliapublishing.com/a/24011/}
}