http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
with familiar directions for performing experiments with a small apparatus. To which are added questions for the examination of scholars
Microfilm. Ann Arbor, Mich., Xerox University Microfilms, 1972. 35 mm. (American Culture Series, 537.1)