Suezu unga
Panama unga
Panama unga no kokusaiteki chii
Nikaragua unga kaisaku youran
Panama unga kaitsuu to nanbei oyobi mekishiko no fugen
Keihin unga ni kansuru kyougikai
Kankoku keifu unga no jitsugen kanousei ni kansuru kenkyuu
Panama unga to rekkoku boueki kyousou
Panama unga no kaitsuu ga waga teikoku ni oyobosubeki eikyou
Leningrad Unga (Leningrad no Unga)
Panama unga no kaitsuu ga nihon ni oyobosu keizaijou no eikyou
Sakurai koube zeikanchou panama unga shisatsu houkokusho
Tsushu jogai no kitaunga
Eikousen hieikousenkei no soujuu undou ni kansuru kenkyuu
Comb with Scene of Pulling a Boat in Makie
Joshi no taiiku undou
Moon Canal
Shiroi kawara no kodomotachi
Canal Quay of Arsenal, Paris
(Canal)
Kappa no shirikodama
The Grand Canal in Venice
(Canal construction)
巴運河の航運 （一〜二）
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Uploaded: 2021-12-23