U.S. Government specification for coal-tar saturated rag felt for roofing and waterproofing.
| Format | Microform |
| Publication Info | [Washington?] : U.S. G.P.O., 1924. |
| Description | 4 pages ; cm. |
| Subjects |
| Series | Fed. Specs. Bd. Spec. No. 81 Standards Bur. Circ. No. 156 |
| General note | Reuse of record except for individual research requires license from LexisNexis Academic & Library Solutions. |
| General note | [With testing procedure] |
| 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. C13.4-156) |
| Govt. docs number | C 13.4:156 |