prepared for Arizona Department of Transportation ; edited and assembled by Laurens C. Hammack and Alan P. Sullivan ; contributions by Kim E. Beckwith ... [and others]
edited by Robert W. Layhe ; contributions by Ronald Beckwith ... [and others] ; prepared for Pima County Department of Transportation and Flood Control
Lee R. Jones ... [and others] ; prepared by Educational Testing Service under contract with the National Center for Education Statistics, Office of Educational Research and Improvement, U.S. Department of Education