Road Research Laboratory (Great Britain) & Institute of Geological Sciences (Great Britain). (1968). Sources of road aggregate in Great Britain (4th ed.). H.M.S.O..
Citace podle Chicago (17th ed.)Road Research Laboratory (Great Britain) a Institute of Geological Sciences (Great Britain). Sources of Road Aggregate in Great Britain. 4th ed. London,: H.M.S.O., 1968.
Citace podle MLA (8th ed.)Road Research Laboratory (Great Britain) a Institute of Geological Sciences (Great Britain). Sources of Road Aggregate in Great Britain. 4th ed. H.M.S.O., 1968.
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