Sources of road aggregate in Great Britain
By: compiled at the Road Research Laboratory with introductory remarks on the geological distribution of roadstones by K.C.Dunham and A.G.MacGregor.
Contributors: Road Research Laboratory.
Edition: 2nd ed.
Publisher: H.M.S.O
Published: 1951
Place of publication: London
Language: eng
Number of pages: 106
Notes: Previous ed 1948.