Handbuch der Kosmobiologie.
Interlaken: Verlag Otto Schlaefli A.=G. 1934. Hardbound. Royal octavo, gray cloth with blue lettering, 237 pp., figures and charts, bibliography. Text is in German. More
Interlaken: Verlag Otto Schlaefli A.=G. 1934. Hardbound. Royal octavo, gray cloth with blue lettering, 237 pp., figures and charts, bibliography. Text is in German. More