Urea, its use and problems /
E.A. Liegel, M.E. Sumner, L.M. Walsh.

APA Citation

Liegel, E. A. (Edward Alan)., Walsh, L. M. (Leo Marcellus)., Sumner, M. E. (Malcolm E.). (1977). Urea, its use and problems. Madison: Research Division, College of Agricultural and Life Sciences, University of Wisconsin.

MLA Citation

Liegel, E. A. (Edward Alan), 1950-, L. M. (Leo Marcellus) Walsh, and M. E. (Malcolm E.) Sumner. Urea, Its Use And Problems. Madison: Research Division, College of Agricultural and Life Sciences, University of Wisconsin, 1977.