Krebs, Katharine C. “Robert White: A River in Spain: Discovering the Duero Valley in Old Castile. London and New York: I.B. Tauris Publishers. 1998. 192 Pp. $18.95”. Frontiers: The Interdisciplinary Journal of Study Abroad 15, no. 1 (December 19, 2007): 203–205. Accessed November 23, 2024. https://frontiersjournal.org/index.php/Frontiers/article/view/229.