TY  - JOUR
T1  - Directory of transportation data sources /
CY  - Washington, DC :
CY  - Springfield, VA :
CN  - TD 1.9/4:
CN  - HE202.5
PB  - The Bureau ;
PB  - Available to the public through the National Technical Information Service,
PP  - Washington, DC :
PP  - Springfield, VA :
N1  - Description based on: Dec. 1993.
ID  - 173966
KW  - Transportation
SN  - 1078-6031
TI  - Directory of transportation data sources /
ER  -