TY  - GEN
TI  - SCREW-THREAD STANDARDS FOR FEDERAL SERVICES
U1  - 621.944 
PY  - 1970///
CY  - U. S.
PB  - Govt. Printing Office
KW  - Screw-Threads, Standard
N1  - Pt. 1-Unified Unj Unified Miniature Screw Threads
ER  -