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A
American Lung Association
American Lung Association
B
BAY AREA PHYSICIANS FOR SOCIAL RESPONSIBILITY
Blue Water Baltimore
E
Environmental Defense Fund
F
Friends Of The Earth, Inc.
G
GRAND CANYON TRUST
GRAND CANYON TRUST
Greater Yellowstone Coalition
M
MONTANA ENVIRONMENTAL INFORMATION CENTER
N
National Parks Conservation Association
NATIONAL PARKS CONSERVATION ASSOCIATION
Natural Resources Defense Council
Natural Resources Defense Council
O
OUR CHILDREN'S EARTH FOUNDATION
P
Physicians for Social Responsibility
PLAINS JUSTICE
POTOMAC RIVERKEEPER, INC.
POWDER RIVER BASIN RESOURCE COUNCIL
S
SAN JUAN CITIZENS ALLIANCE
SIERRA CLUB
Sierra Club
Sierra Club
Sierra Club and New York Public Interest Research Group
South Coast Air Quality Management District, et al.
STEWARDS OF THE LOWER SUSQUEHANNA
W
WATERKEEPERS CHESAPEAKE
WILDERNESS SOCIETY
Winter Wildlands Alliance
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