http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
"Papers contributed to the 11th and Final International Field Workshop and Symposium of the International Geological Correlation Programme (IGCP) Project 156: Phosphorites, which was held at Hertford College, Oxford, England, 5-8 September, 1988"--P. v.
Περιλαμβάνει βιβλιογραφικές παραπομπές και ευρετήριο.
Geological Society special publication 52