Quito, Ecuador: Fray Jodoco Ricke, 1949. First Paperback Edition, First Printing. Paperback. Octavo. 6.25 x 8.5 in. xii, 158 pp. Occasionally illustrated with black & white reproductions of photographs and musical notations. Very good in original lettered wrappers, light toning to covers with creasing to one corner. Item #1600
Parallel text in Spanish and English.