Heindl, L.A., and Feth, S.H., 1955, Piping and earth cracks--a discussion: American Geophysical Union Transactions, v. 36, p. 342-345. Authors Heindl, L.A., and Feth, S.H. Publication Date 1955 Citation American Geophysical Union Transactions, v. 36, p. 342-345. State AZ Province BR County PN Placenames McClellan Wash area Basins Tucson Ama Watersheds Upper Gila River Keywords Earth Fissure More Keywords Earth Fissure, AzGeoBib RefNum 4305