1
Humic substances and chemical contaminants : proceedings of a workshop and symposium ... Anaheim, Calif. October 26-27, 1997 /
Book
2
Soil organic matter : analysis and interpretation ; proceedings of a symposium , Washington, 14. Nov. 1994 /
Book
...URA - Soil chemistry...
3
Advances in soil organic matter research: the impact on agriculture and the environment : advances in soil organic matter research: the impact on agriculture and the environment: joint meeting: proceedings : Colchester, 03.09.90-04.09.90 /
Book