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1Published 1970“...Southwest Parks and Monuments Association in cooperation with the National Park Service,...”
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2by Schofield, Sue, 1941-“...Southwest Parks and Monuments Association in cooperation with the National Park Service,...”
Published 1987
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3“...Southwest Parks and Monuments Association in cooperation with the National Park Service,...”
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4Published 1987“...Published in cooperation with the National Park Service by the Southwest Parks and Monuments...”
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5Published 1993“...Southwest Parks and Monuments Association [in cooperation with National Park Service, U.S. Dept...”
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