Hay, Roy. The dictionary of garden plants in colour : with house and greenhouse plants / [by] Roy Hay and Patrick M. Synge. - London : Mermaid books, 1969,1992. - xvi, 373 p. : col. ill. ISBN: 0718127722 LCCN: 92034037 Subjects--Topical Terms: Plants, Ornamental--Pictorial works.Plants, Ornamental--Dictionaries.