Botany & Horticulture in 1949

Pflanzenphysiologische Bodenkunde by Mitscherlich, Alfred

ABBE David's Diary: Being an Account of the French Naturalist's Journeys and Observations in China in the Years 1866 to 1869 by

Sammlung Göschen Grundriß der Allgemeinen Mikrobiologie by Schwartz, Wilhelm