| Ureaform
| Kolterman, D. W. 1958. Proceedings of 1958 Turf Conference Sponsored by the Midwest Regional Turf Foundation. p. 3-5.
| More | 100452 |
| Activated sewage sludge
| Wilson, Charles W. [G.]. 1958. Proceedings of 1958 Turf Conference Sponsored by the Midwest Regional Turf Foundation. p. 5-8.
| More | 100453 |
| Corn gluten meal
| Stewart, Charles W. 1958. Proceedings of 1958 Turf Conference Sponsored by the Midwest Regional Turf Foundation. p. 8-9.
| More | 100454 |
| Corn gluten meal
| Stewart, Charles W. 1958. Proceedings of 1958 Turf Conference Sponsored by the Midwest Regional Turf Foundation. p. 9-11.
| More | 100464 |
| Ureaform
| Grau, Fred V. 1958. Proceedings of 1958 Turf Conference Sponsored by the Midwest Regional Turf Foundation. p. 12-13.
| More | 100455 |
| Nitrogen in plant metabolism
| Goetze, Norman R. 1958. Proceedings of 1958 Turf Conference Sponsored by the Midwest Regional Turf Foundation. p. 14-16.
| More | 100456 |