Grassed and planted areas by motorways : a report based on information given in 1974/75 by the Department of the Environment and county council highway departments, with additional data from other sources /
Way, J. M.(J. Michael)
Great Britain.Department of the Environment.
Huntingdon : Institute of Terrestrial Ecology, Monks Wood Experimental Station,
1976.
Bibliography : p. 39-40.
Roadside improvement