1902 (1st ed.) [4], 139 p., paperbound (outer ends sine somewhat worn). Scarce first edition.
Stuttgart, Verlag von Ferdinand Enke, 1902, kl. in-8vo, 139 S., Original-Pappband.
Phone number : 41 (0)26 3223808
Stuttgart, Verlag von Ferdinand Enke, 1926, kl. in-8vo, 4 Bl. + 169 S., Original-Leinenband.
Phone number : 41 (0)26 3223808