Research graph
References from Road tunnels in Japan: Deterioration and countermeasures. Local targets link to admitted publications; unresolved targets remain external evidence.
Unresolved reference
1989 · External reference
Unresolved reference
1990 · External reference
Urgent inspection of road tunnels and maintenance in the future
1990 · External reference
Report on study of deterioration and leakage of road tunnels
1992 · External reference
Unresolved reference
External reference
