Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Maintenance of railway roadbed by cleaning the ballast
Methods based on maintaining solidity of supporting parts of ballast by removing vegetation, etc., by air jet, to insure percolation of water into roadbed and trenches.
Maintenance of railway roadbed by cleaning the ballast
Methods based on maintaining solidity of supporting parts of ballast by removing vegetation, etc., by air jet, to insure percolation of water into roadbed and trenches.
Maintenance of railway roadbed by cleaning the ballast
L'entretien des voies ferrees par le soufflage du ballast
Genie Civil ; 74
1919
1 Fig.
Aufsatz (Zeitschrift)
Französisch
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