The Royal Horticultural Society dictionary of gardening : a practical and scientific encyclopaedia of horticulture - Royal Horticultural Society; Chittenden, Fred J.; Nicholson, George, 1847-1908; Synge, Patrick M. (Patrick Millington), 1910-1982 (Oxford : Clarendon Press, 1951)
V. 1. A-Co.--v. 2. Co-Ja.--v. 3. Je-Pt.--v. 4. Pt-Zy
Based on G. Nicholson's The illustrated dictionary of gardening