Laverton, Sylvia. Irrigation : its profitable use for agricultural and horticultural crops / Sylvia Laverton. - London : Oxford University Press, 1964. - viii, 166 p. : illus., maps. ; 23 cm. LCCN: 64009341 Subjects--Topical Terms: Irrigation--Great Britain. LC Class. No.: S616.G7 / L3 Dewey Class. No.: 631.7 / LAI 1964