(1975). A study of the evolution of concentration in the United Kingdom. Luxembourg: Office for Official Publications of The European Communities.
Chicago-tyylinen lähdeviittausA Study of the Evolution of Concentration in the United Kingdom. Luxembourg: Office for Official Publications of The European Communities, 1975.
MLA-viiteA Study of the Evolution of Concentration in the United Kingdom. Luxembourg: Office for Official Publications of The European Communities, 1975.
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