Blackboard slate.
| Format | Microform |
| Publication Info | [Washington?] : U.S. G.P.O., 1925. |
| Description | 7 pages ; cm. |
| Subjects |
| Series | Simplified Practice Recommendation No. 15 |
| General note | Reuse of record except for individual research requires license from LexisNexis Academic & Library Solutions. |
| General note | [On standardization recommendation of conference of manufacturers, distributors, and users; with conference summary, and lists of participants and adherents] |
| Citation/References note | CIS Index to U.S. Executive Branch Documents, 1910-1932 Part 2 |
| Reproduction note | Joyner- Microfiche. [Bethesda, Md.]: LexisNexis Academic & Library Solutions, 1997. 11 x 15 cm. (CIS US Executive Branch Documents : no. C13.12-15) |
| Govt. docs number | C 13.12/1:15 |