Gram, Ernest. Plant disease, in orchard, nursery and garden crops - London : Universal Textbook, 1951 - 618 p. : ilus LCCN: 14791 Subjects--Topical Terms: Fitopatología.Fruta--Enfermedades.Legumbres--Enfermedades.Plantas ornamentales--Enfermedades. Dewey Class. No.: 632 / G73