Kells, Lyman M. Kern Willis.F Bland James.R
Slide rule: aa self instruction manual Lyman M. Kells, Willia F. Kern, James R. Bland - New York Keuffel & Esser 1955 - 126 p.
Slide rule
629.1309 / KEL
Slide rule: aa self instruction manual Lyman M. Kells, Willia F. Kern, James R. Bland - New York Keuffel & Esser 1955 - 126 p.
Slide rule
629.1309 / KEL