Specification for road traffic signals /
| Corporate Author: | |
|---|---|
| Format: | Book |
| Published: |
London:
British Standards Institution,
1971
|
| Series: | British Standard ;
505 : 1971 |
| Subjects: |
| Physical Description: | 43 p. : ill., tables, diag. ; 21 cm. |
|---|---|
| ISBN: | 580066851 |