Retrieved on 15th February 2010, from http://www.obs.coe.int/yb_premium/public/.
Recuperado el 15 de febrero de 2010, de http://www.obs.coe.int/yb_premium/public/.
Translate the following text into Spanish:
"Retrieved on 15th February 2010, from http://www.obs.coe.int/yb_premium/public/."
Recuperado el 15 de febrero de 2010, de http://www.obs.coe.int/yb_premium/public/.