TY  - BOOK
ED  - National Joint Steamfitting Apprenticeship Committee.
ED  - United States.
TI  - National standards for steamfitting apprenticeship including suggestions for putting national standards into operation in local communities
T2  - [U.S. Dept. of Labor. Division of Labor Standards] Bulletin
AV  - HD4885.U5 N28
PY  - 1939///
CY  - Washington
PB  - U.S. Govt. Print. Off.
KW  - Apprentices
KW  - United States
N1  - At head of title: United States Dept. of Labor ... Division of Labor Standards
ER  -