This page displays all 「FI」 in main group E21F16/00. HB:Handbook CC:Concordance ReturnTo FI-Section/Broad-Facet-Choice Onelevelup E21F16/00 Drainage (keeping dry foundation sites or other areas in the ground E02D 19/00) [2] HB CC 2D062 E21F16/02 .of tunnels [2] HB CC 2D062 TOP
E21F16/00 Drainage (keeping dry foundation sites or other areas in the ground E02D 19/00) [2] HB CC 2D062 E21F16/02 .of tunnels [2] HB CC 2D062