TY  - BOOK
AU  - Maycock, G.
AU  - Hall, R. D.
TI  - Accidents at 4-arm roundabouts: by ... and R. D. Hall
AV  - TE7 R63 no. 1120 
PY  - 1984///
CY  - Crowthorne, Berkshire
PB  - Transport and Road Research Laboratory
KW  - Traffic accidents
KW  - Research
ER  -