Description of the use of Place Keyword Assistant, a software tool, for tagging metadata with geographic names from standardized lists or controlled vocabularies. Includes instructions on use and downloading software files.
Browsable online access to the CSA/NBII Biocomplexity Thesaurus developed in 2002-2003 through a partnership between the NBII and CSA as a merger of five thesauri.
Detailed publication on the classification system for an inventory of wetlands and deepwater habitats of the United States used to describe ecological taxa and arrange them in a system useful to resource managers.
The classification system by which coal is classified into resource/reserve base/reserve categories on the basis of the geologic assurance of the existence of those categories and on the economic feasibility of their recovery.
A summary of the divisions of geologic time intended to provide a consistent time scale to be used in communicating ages of geologic units in the United States.