1. Animal manures — what are they worth today?;Benne,1961
2. Möglichkeiten zur Verbesserung der Protein-Qualität von Grünalgenmehl. Sitzungsber;Bock;Dtsch. Akad. Landw. Wiss.,1967
3. Protein production rates by algae using swine manure as a substrate;Boersma,1975
4. Amino acid composition and nutritive value of the algae Spirulina maxima;Clement;J. Sci. Food Agric.,1967
5. Experiments with Chlorella;Groghegan,1953