http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
edited with a critical introduction and an afterword by Frederick Suppe.
This volume is an outgrowth of a symposium on the structure of scientic theories help in Urbana, March 26 to 29, 1969.
Περιλαμβάνει βιβλιογραφικές παραπομπές και ευρετήριο.