http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
3 pages ., 115 pages, 1 unnumbered page : diagrams ; 22 cm.
By R. A. Houstoun ... with 22 illustrations.
"Ten of the twelve chapters have already appeared in the Electrician in a slightly different form."