A. L. Prince, S. J. Toth, A. W. Blair and F. E. Bear, 'Forty-year studies of nitrogen fertilizers'
- C 42/141.
- File
- 1941.
A. L. Prince, S. J. Toth, A. W. Blair and F. E. Bear, 'Forty-year studies of nitrogen fertilizers', reprinted from Soil Science, Vol. 52, No. 4, Oct. 1941.