1. Bibliography of the Literature on the minor Elements and their Relation to Plant and Animal Nutrition by the Chilean Nitrate Educational Bureau, IV Ausg. Bd. I, New York (1948), Bd. II (1951), Bd. III (1953), Bd. IV (1955). —
2. : L'Alimentation minerale des plantes et le problème de engrais chimiques, Masson Cie. Editeurs, Paris (1953). —