Results: 1 - 4 of 4
Nov 03, 2020
Data
Jun 27, 2011
Open File Report
Dec 31, 1984
Bulletin
… the precise role of different organic coal components in … categories: relatively unaltered organic components, thermally …
Feb 28, 1993
Open File Report
… are enriched in humic and other organic acids. These materials are … in soils that are depleted in organic matter. They also appear to …