Johnson, L.H.
The slide rule - New York Van Nostrand 1949 - 242p.
518.5 / J6
The slide rule - New York Van Nostrand 1949 - 242p.
518.5 / J6
Copyright @ 2015-2021 Library, University of Moratuwa, Katubedda, Moratuwa (10400), Sri Lanka