| Type |  Book |
| ชื่อเรื่อง | Ayer directory of publications : the professional's directory of print media published in the United States, Peurto Rico, Virgin Islands, Canada, Bahamas, Bermuda, the Republics of Panama and the Philippines. Economic descriptions of the states, provinces, cities and towns in which all listees are published, 15 separate, classified lists, 69 custommade maps on which all publication cities and town are indicated |
| พิมพลักษณ์ | Philadelphia : Ayer Press, [c1972-] |
| รูปเล่ม | v |
| หัวเรื่อง | Newspapers --Bibliography --Catalogs [] |
| | Periodicals --Bibliography --Catalogs [] |