1. (a) : The Diagnosis of mineral Deficiencies in Plants by visual Symptoms. (A color Atlas and Guide). London 1951.
2. (b) : Biochemie der Spurenelemente. Berlin und Hamburg 1955.
3. (c) Bibliography of the Literature on the minor Elements and their Relation to Plant and Animal Nutrition by the Chilean Nitrate Educational Bureau, New York 1948, 4. Ausg. Bd. 1 ff.
4. : Der Nährstoffgehalt des idealen Bodens. 6. Sonderh. z. Z. Landw. Forsch. Febr. 1955, S. 50.