2 vols., XXI, 851, 610 pp. travel journal and in-depth study of the geographic and ethnographic nature of central Sumatra, primarily by Maass, with shorter specialized sections by J.P. Kleiweg de Zwann, Eugene Fischer, Hubert Jansen, Max Weber, Karl Grunberg and P. Magnus, bibliographies, indexes, 261 text illustrations, 4 photogravures..... More