Trees and shrubs of Mexico / by Paul C. Standley ; Part 1: (Gleicheniaceae - Betulaceae)
Trees and shrubs of Mexico / by Paul C. Standley ; Part 3: (Oxalidaceae - Turneraceae)
Heiß die Segel! : mit dem Segelschulschiff 'Gorch Fock' der Kriegsmarine auf Ostseefahrt
Trees and shrubs of Mexico / by Paul C. Standley ; Part 2: (Fagaceae - Fabaceae)