Saikougaku

Saikougaku

Saikougaku

Saikougaku

Saikougaku

Saikougaku

Saikougaku

Saikougaku

Saikougaku

Saikougaku

Saikougaku zensho : tankou shoukei

Saikou

Saikou

採鉱資料

Saikou tekiyou

開採鉄鉱鉱区図

Sakou saishuhou

採鉱学外国教授招雇ノ件

採鉱学外国教授招雇ノ件

土木工学教師及採鉱学教師ノ件

Coal Miner (Entering the Mountain to Mine the Coal)

Saikouhou chousa houbun

Saikouhou chousa houbun

地質採鉱両学分科ノ件ニ付答書

貴鉱石と採掘熱 : タングスデン鉱の将来