Die Kakteen. Eine Gesamtdarstellung der eingeführten Arten nebst Anzucht- und Pflege-Anweisungen.
Stuttgart, Franckh’sche Verlagshandlung, 1957-1975, numerous text-illustrations (drawings, photos and mounted colour-photo illustrations), large 8vo (185 x 260 mm), 5 volumes, cloth (loose-leaf system). Very well preserved copy.
€ 600This important work remained unfinished and was published in instalments, resulting in 4 volumes. This set includes an extra volume with duplicates arranged in a different order. Very difficult to collate, but apparently an overcomplete set.