Irrigation by sprinkling / Christiansen, Jerald Emmet, 1905-1989. text Berkeley, Cal. : Agricultural Experiment Station, 1942. eng 124 p. : 24 cm. Cover title. "This bulletin supersedes Extension circular 4, Irrigation by overhead sprinkling, H.A. Wadsworth, published in 1926." Includes bibliographical references. Sprinkler irrigation -- California.