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Drainage maintenance
Drainage maintenance
Drainage maintenance
Clay, R. B. (author) / Negro, A. / Ferreira, A. A. / International Tunnelling Association
Open session, International Tunnelling Association ; 1998 ; Sao Paulo; Brazil
International Tunnelling Association ; 521-526
1998-01-01
6 pages
Held during the 24th ITA annual meeting
Conference paper
English
tunnels , metropolises , ITA
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Drainage box culvert manholes and drainage box culvert maintenance method
European Patent Office | 2020
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