Elmer Sperry : inventor and engineer /
Hughes, Thomas Parke
Elmer Sperry : inventor and engineer / Thomas Parke Hughes - Baltimore, Md. The Johns Hopkins University Press 1971 - xvi, 348 p. : ill. ; 25 cm.
p. 341-342
0801847567 RM128.64
Sperry, Elmer Ambrose, 1860--1930
Elmer Sperry : inventor and engineer / Thomas Parke Hughes - Baltimore, Md. The Johns Hopkins University Press 1971 - xvi, 348 p. : ill. ; 25 cm.
p. 341-342
0801847567 RM128.64
Sperry, Elmer Ambrose, 1860--1930
