Constructional science
BOOTHROYD, F
Constructional science Electro-magnets F. Boothroyd - Huddersfield Schofield & Sims ltd 1953 - 112p
Electromagnets
Constructional science Electro-magnets F. Boothroyd - Huddersfield Schofield & Sims ltd 1953 - 112p
Electromagnets