A survey of the condition of 19 km of highway drains /
by M. P. O'Reilly and G. Brennan.
- Crowthorne, Berkshire : Ground Engineering Division, Sturctures Group, Transport and Road Research Laboratory, 1989.
- 12 p.
- Research report ; 212 0266-5247 .
- Research report (Transport and Road Research Laboratory), 212 .