The influence of crop plants on those which follow, IIBurt L. Hartwell, F. R. Pember, G. E. Merkle · First published 1919Open the Tome
The availability of the nitrogen of cotton-seed meal and beef scrap for chicksBurt L. Hartwell, Robert A. Lichtenthaeler · First published 1914Open the Tome
Abstracts of feeding experimentsBurt L. Hartwell, J. Frank Morgan, L. F. Whipple · First published 1909Open the Tome
