http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
viii, 91 pages : illustrations, iv plate (1 color) on 2 ., diagrams 19 cm.
by Erwin Schrodinger. Based on lectures delivered under the auspices of the Institute at Trinity college, Dublin, in February 1943.