Klotz, Leo Joseph. Color handbook of citrus diseases - 4 ed. - Riverside, Ca. : University of California. Division of Agricultural Sciences. Citrus Research Center, 1973 - 121 p. LCCN: 28226 Subjects--Topical Terms: CĂtricos--Enfermedades. Dewey Class. No.: 632.8 / K56 1973