Sánchez Seijo, Manuel Antonio Experiencias y aventuras navegando los principales ríos de Puerto Rico en canoa amerindia Manuel A. Sánchez Seijo. - [s.l.] [s.n.] 2012. - 51, [15] p. [14] ill. 28 cm. Includes bibliographical references. Subjects--Topical Terms: Rivers--Puerto RicoCanoes and canoeing Subjects--Geographic Terms: Puerto Rico--Description and travel.