Results: 1 - 3 of 3
Jun 27, 2011
Open File Report
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 …
Feb 15, 2010
Open File Report
… within shaly units with a high organic content (e.g., Base of Fish …