Crow Indian Tribe: Air Quality Resources Report
http://www.blm.gov/pgdata/etc/medialib/blm/mt/field_offices/miles_city/og_eis/crow.Par.52956.File.dat/quality.pdf

Bureau of Land Management: Montana State Office


This 3-page PDF is part of the final statewide oil and gas environmental impact statement and proposed amendment of the Powder River and Billings Resource Management Plans. This section describes the air quality of the Crow Reservation.

This resource is referenced here:
Subject: Geoscience:Atmospheric Science:Meteorology:Air quality, Environmental Science:Air Quality
Resource Type: Scientific Resources:Overview/Reference Work