Tema: Guías, turismo, viaje, prehistoria, arqueología, pinturas rupestres, libros en inglés
Published by the Patronato de las Cuevas Prehistóricas de la provincia de Santander, Santander, 1961, fourth edition, paperback, 94 pp., 17x12 cm., with copious illustrations, colour plates and b/w outside the texts, and b/w illustrations in the text, good condition.