Ingels, Jack E. Ornamental horticulture : science, operations & management / Jack E. Ingels. - 3rd ed. - Albany, NY : Delmar Thomson Learning, c2001. - xxv, 518 p. : ill (some col.), map ; ISBN: 0766814173 Subjects--Topical Terms: Ornamental horticulture. LC Class. No.: SB404.9 / .I54 2001