"Handbooks and manuals"@en . "Handbooks and manuals" . . . . . . . . . "GEOTECHNICAL ENGINEERING INVESTIGATION MANUAL" . "Geotechnical engineering investigation manual" . "Geotechnical engineering investigation manual"@en . . . . . . . . . . . . . . "Géologie appliquée." . . "Geologia - Manuali." . . "Géologie appliquée Guides, manuels, etc." . . . . "Geotecnica - Manuali." . .