Blar i Brage - Statens vegvesen på forfatter "Øverby, Charles"
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A guide to the use of Otta Seals
Øverby, Charles (Publication;93, Research report, 1999) -
Monitoring of sealed low traffic roads in Botswana : Oodi-Modipane road
Øverby, Charles (Intern rapport / Vegdirektoratet;1341, Others, 1987)