Edlin, Herbert L. Know your conifers / by Herbert L. Edlin. - 2nd ed. - London : Her Majesty's Stationery Office, 1970. - 64 p. : ill. - Forestry Commission. Booklet ; no. 15. . - Forestry Commission booklet ; no. 15. . ISBN: 0117100064 Subjects--Topical Terms: Conifers.Conifers--Identification.