TY  - BOOK
T1  - A modal split model for long distance travel
A1  - Wigan, M. Ramsay
A2  - Walmsley, D. A.
LA  - English
PP  - Crowthorne, Berkshire, Eng.
PB  - Transport and Road Research Laboratory
YR  - 1972
UL  - https://tuklas.up.edu.ph/Record/UP-99796217610203099
KW  - Choice of transportation : Mathematical models.
ER  -