Die Saftströme der Pflanzen. By Bruno Huber

Die Ascorbimäure in der Pflanzenzelle. By Helmut Metzner

Fossil Plants of Poland. By Jerzy Lilpop: 2nd edition revised by Mikoxaj Kostyniuk.

Control of the Plant Environment. Proceedings of the Fourth Easter School in Agricultural Science, University of Nottingham, 1957. Ed. J. P. Hudson

Illustrated Flora of the Canadian Arctic Archipelago. By A. E. Porsild