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Vannoy Hartrog Manning

3 cilt bulundu.

Cilt sonuçları

War useWar gas investigationsVannoy Hartrog Manning

War gas investigations

Vannoy Hartrog Manning · Govt. print. off.

39 sayfa · 1919

Gases / Toxicity / Asphyxiating and poisonous Gases / War use

Safety measuresMine safety devices developed by the United States Bureau of minesVannoy Hartrog Manning, United States. Bureau of Mines

Mine safety devices developed by the United States Bureau of mines

Vannoy Hartrog Manning, United States. Bureau of Mines · Yayınevi bilinmiyor

Sayfa sayısı yok · 1917

Coal mines and mining / Safety measures

Mines and mineral resourcesYearbook. 1916-Vannoy Hartrog Manning, United States. Bureau of Mines

Yearbook. 1916-

Vannoy Hartrog Manning, United States. Bureau of Mines · Govt. print. off.

Sayfa sayısı yok · 1917

Mines and mineral resources