Kayakugaku

Kayakugaku

Kanmei kayakugaku

火薬

Kayaku dokuhon

Kayaku shinron

Kayaku dokuhon

Grenade

火薬入れ

Kayaku shinron

火薬ケース（左）

Grenade

火薬入れ（右）

Yakuhin to kasai

Kayaku jutsugoshuu

満鮮火薬業

Kayaku kouenshuu

Yakushushou yakuhingaku

Seiyakusha seiyakugaku

Yakurigaku

Yakurigaku

Yakurigaku

Shouyakugaku

Shouyakugaku

Yakubutsugaku