Mears, D. B. A microprocessor-based irrigation controller - St. Josep, Mich. : American Society of Agricultural Enginneers, 1979 - 15 p. : ilus - Documento ; 79-5525 . - Documento ; 79-5525 . LCCN: 33572 Subjects--Topical Terms: Irrigación--Implementos y maquinaria.