Greenland, postal history, postmark catalogue 1877-1992 Greenland : Volume 2, catalogue Postal history, postmark catalogue 1877-1992
| Hjorne, Torben | Greenland, Postal history, Postal markings, 1877-1992, 19th Century, 20th Century, Catalogs and Price Lists, Post offices, Postal Rates | 1992 c1992 | Denmark : Arhus, [Denmark] |