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1Published 2000Subjects: “...Vegetation surveys Arizona Saguaro National Park....”
Government Document Thesis Book -
2Published 1995Subjects: “...Vegetation surveys Arizona Tonto National Monument....”
Book -
3by Phillips, Barbara G.Subjects: “...Vegetation surveys Arizona Tonto National Monument....”
Published 1992
Book -
4by Felger, Richard StephenSubjects: “...Vegetation surveys Arizona Organ Pipe Cactus National Monument....”
Published 1990
Book