TY  - BOOK
AU  - Ruppenthal,Karl M.
TI  - Challenge to transportation
PY  - 1961///
CY  - Stanford (California) : 
PB  - Stanford University, 
KW  - Transporte
N1  - Form the 1960 sessions of the Transportation management program and the 15th annual convention of the National defense transportation association
ER  -