[by] Loyal Clarke [and] Robert L. Davidson. by Peter Alexander and Robert F. Hudson. by Don Beveridge and Jeffrey P. Davidson. by Harold C. Whitford and Robert J. Dixson. by Marc A. Franklin and Robert L. Rabin. by Larry W. Canter and Robert C. Knox. by Gerald Feinberg and Robert Shapiro. [by] Ernest C. Pollard [and] William L. Davidson. [by] Peter W. Zehna [and] Robert L. Johnson.