Powder River Basin Coal-Bed Methane Project
http://www.mbmg.mtech.edu/coal/DEFAULT.htm

Montana Bureau of Mines and Geology, U.S. Bureau of Land Management


The purpose of this web site is to offer a comprehensive yet
concise resource on coal-bed methane documentation. This searchable database contains reference listings for publications, books, and articles that relate to coal-bed methane development and related natural resources. Included in the database are flags that help determine if a specific publication is relevant, and a description of where to find a copy.

This resource is referenced here:
Subject: Environmental Science:Energy:Fossil Fuels,
Resource Type: Scientific Resources:Collection, Bibliography