http://www.archive.org/details/comparativetesto00heit Thesis (B.S.)--Armour Institute of Technology, 1911 Bibliography: leaf 37 B.S. in... Show morehttp://www.archive.org/details/comparativetesto00heit Thesis (B.S.)--Armour Institute of Technology, 1911 Bibliography: leaf 37 B.S. in Electrical Engineering Show less