Ward Derryberry

title	media type	ISBN-13 (ISBN-10)	year of publication
Trouble Shooting Irrigation Control Systems	Spiral-bound	978-0-9674584-0-3 (0-9674584-0-4)	2000
Trouble Shooting Irrigation Control Systems	Paperback	978-99938-0-297-6 (99938-0-297-2)	1989