共 50 条
- [2] THE GEOCHEMICAL NATURE AND AGRICULTURAL IMPORTANCE OF COMMERCIAL HUMIC MATTER ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1989, 198 : 27 - GEOC
- [5] Analytical pyrolysis of humic substances and soils. Geochemical, agricultural and ecological consequences Schulten, Hans-Rolf, 1600, (25):