〔vickers社の英国軍艦改造案:"OUTLINE DESCRIPTION OF A BATTLESHIP OF ABOUT 35,000 TONS STANDARD DISPLACEMENT AND 24 KNOTS SPEED.","OUTLINE DESCRIPTION OF A BATTLESHIP OF ABOUT 10,000 TONS STANDARD DISPLACEMENT AND 33.5 KNOTS SPEED."綴〕 静止画資料 1924 平賀譲デジタルアーカイブ | 柏図書館
ON MECHANICAL TESTS OF TEST PIECES PREPARED FROM SAMPLES OF STEEL SUPPLIED BY MESSRS. WM. BEARDMORE & CO. LTD. 静止画資料 1924 平賀譲デジタルアーカイブ | 柏図書館
COMPARATIVE RESULTS OBTAINED FROM MILD STEEL, HIGH TENSILE STEEL, AND DUCOL STEEL FOR INFORMATION OF ADMIRAL Y. HIRAGA 静止画資料 1924 平賀譲デジタルアーカイブ | 柏図書館
PARTICULARS OF THREE QUALITIES OF STEEL WHICH WERE FORWARDED TO ADMIRAL Y. HIRAGA 静止画資料 1924 平賀譲デジタルアーカイブ | 柏図書館