http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Science for survival and sustainable development
the proceedings of the study-week of the Pontifical Academy of Sciences, 12-16 March 1999
[editors of the proceedings: V. I. Keilis-Borok and M. Sánchez Sorondo].
Dostępne również w formie elektronicznej.
Pontificiae Academiae Scientiarum Scripta Varia 98