TY  - BOOK
T1  - Automatic speed warning sign - Hampshire trials
T2  - Transport and Road Research Laboratory
A1  - Helliar-Symons, R.D
LA  - English
PP  - Crowthorne, Berkshire
PB  - Transport and Road Research Laboratory
YR  - 1984
UL  - https://ds.mainlib.upd.edu.ph/Record/UP-99796217610231479
OP  - 27
ER  -