TY  - BOOK
T1  - Visibility 11 reports.
T2  - Highway research record
LA  - English
PP  - Washington, D.C.
PB  - Highway Research Board
YR  - 1972
UL  - https://tuklas.up.edu.ph/Record/UP-99796217610472978
OP  - 148
NO  - Papers sponsored by the Committee on Visibility, 8 of which were presented at the 50th annual meeting.
KW  - Automobile driving at night : Congresses.
KW  - Night vision : Congresses.
KW  - Motor vehicles : Lighting : Congresses.
KW  - Roads : Lighting : Congresses.
ER  -