Documentation digest
By: [of the] Road TunnelsCommittee [for the] XIVth World Congress [of the] Permanent International Association of Road Congresses, Prague, 1971.
Contributors: Permanent International Association of Road Congresses. Road Tunnels Committee.
Publisher: Permanent International Association of Road Congresses
Published: 1971
Place of publication: Paris
Language: eng
Number of pages: 590