Couto, Helena. THE ORDOVICIAN IN VALONGO ANTICLINE (NORTHERN PORTUGAL): STATE OF ART. SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 13th SGEM GeoConference on SCIENCE AND TECHNOLOGIES IN GEOLOGY, EXPLORATION AND MINING, 2013, pp. 203 - 208 pp. https://doi.org/10.5593/sgem2013/ba1.v1/s01.028