44th international congress // International Union of Public Transport : Dublin, 1981, [24 - 29 May] ; 1: Interchanges in public transport
International congress. International Union of Public Transport ; 44 ; 1981 ; Dublin International congress. International Union of Public Transport ; 44 (Dublin) : 1981.05.24-29
1981
28 S.
Ill., graph. Darst.
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