Watershed Exposition, Sonora Desert Museum

Front:
HUMIOITY TRANSPIRATION

Back:
Petley WATERSHED EXPOSITION Arizona – Sonora Desert Museum Tucson, Arizona "Water Street” is the center of the first compre- hensive WATERSHED EXPOSITION in the world offering many exhibits showing the importance of our most important natural resource. Pub. by Petley Studios, 4051 E. Van Buren, Phoenix, Arizona Photo by Dick Parrish 68696