http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
viii, 115 pages, 1 unnumbered page : diagrams ; 18 cm.
by H. J. Josephs ... with foreword by W. G. Radley ... With 15 diagrams.
"Based on an 'out-of-hours' course of lectures delivered ... to engineers at the Post office Research station." --Foreword.
Methuen's monographs on physical subjects