1.
 |  | Title: Sewage Sludge: Land Utilization and the Environment : 11-13 August 1993, Sheraton Airport Inn, Bloomington, Mn (Sssa Miscellaneous Publication)
by C.E. Clapp, W.E. Larson, R.H. Dowdy
ISBN: 0891188134
Publisher: American Society of Agronomy
Pub. Date: 01 December, 1994
List Price: $30.00
Amazon.com Price: $30.00 |
2.
|  | Title: Humic Substances in Soil and Crop Sciences: Selected Readings : Proceedings of a Symposium Cosponsored by the International Humic Substances Society
by P. MacCarthy, C.E. Clapp, R.L. Malcolm, P.R. Bloom
ISBN: 0891181040
Publisher: Amer Society of Agronomy
Pub. Date: 01 December, 1990
List Price: $20.00
Amazon.com Price: $20.00 |
3.
|  | Title: Plant Growth Stimulation by Humic Substances and Their Complexes with Iron: Proceedings No. 470 (Proceedings of The International Fertiliser Society)
by Y. Chen, H. Magen, C.E. Clapp
ISBN: 085310106X
Publisher: The International Fertiliser Society
Pub. Date: March, 2001
|
4.
|  | Title: Humic Substances and Chemical Contaminants: Proceedings of a Workshop and Symposium Cosponsored by the International Humic Substances Society, Divisions S-2, S-1, S-3, S-4, and S-11 of the Soil
by C. E. Clapp, M. H. B. Hayes, N. Senesi, Bloom. P. R., P. M. Jardine, E. C. Clapp
ISBN: 0891188371
Publisher: Amer Society of Agronomy
Pub. Date: 01 December, 2001
List Price: $54.00
Amazon.com Price: $54.00 |
