Telephone users guide : Ogden Service Center.
| Other author | United States. Internal Revenue Service. |
| Other author | Ogden Service Center. |
| Format | Book |
| Edition | Rev. 7-90. |
| Publication Info | [Washington, D.C.?] : [Internal Revenue Service], 1990. |
| Description | 1 volume (various pagings) ; 23 cm |
| General note | "July 1990". |
| Govt. docs number | T 22.19/2:T 23/3/990 |
| Govt. docs number | D 301.104:T 23 |