Agriculture in 1967

Kohlenhydratreiche Lebensmittel by Acker, Ludwig

Bulletin of Environmental Contamination and Toxicology by Hylin, J. W.

Archiv Für Tierernährung. Band 16, Heft 1-7 by

Identification of North American Commercial Pulpwoods and Pulp Fibres by Kennedy, R. W., Strelis, L.