TY  - BOOK
AU  - United Nations. Expert working Group from Asia and the Far East on Railway operating and Signalling (1953)
ED  - United Nations. Expert working Group from Asia and the Far East on Railway operating and Signalling (1953)
TI  - "Railway operating and Signalling Techniques in Europe, Japan & United States of America"
U1  - "D515:8.5.N53t, J3/UN" 
PY  - 1953///
CY  - New
PB  - York United Nations USA    
KW  - Engineering
ER  -