found: His The tree & shrub expert, c1983:t.p. (Dr. D.G. Hessayon)
found: OCLC data base, 5/13/91(hdgs.: Hessayon, D. G.; Hessayon, D. G. (David Gerald), 1928- ; usage: D.G. Hessayon)
found: ALCS database, 11 Sept. 2006(D. Hessayon, born 13 Feb. 1928)
found: Wikipedia, 7 April 2022(D.G. Hessayon; David Gerald Hessayon (born 1928) is a British author and botanist of Cypriot descent who is known for a best-selling series of paperback gardening manuals known as the "Expert Guides" under his title Dr. D. G. Hessayon; born February 13 1928, Manchester)
