Minotaur Pumping Arrangement
Yuzuru Hiraga Digital Archive | Kashiwa Library
英国内地造船所視察報告 斉藤造船監督官
Yuzuru Hiraga Digital Archive | Kashiwa Library
THE ELECTROLYTIC METHOD OF PREVENTING CORROSION. By Elliot Cumberland.(Extract of "The American Marine Engineer,"July,1916.) Sept.27th,1916.
Yuzuru Hiraga Digital Archive | Kashiwa Library
証(小学初等第六級卒業)
Yuzuru Hiraga Digital Archive | Kashiwa Library