The Columbia Gazetteer of the WorldSaul Bernard Cohen · First published 1998 · Latest edition 2008Open the Tome
Geopolitics of the World SystemSaul Bernard Cohen · First published 2002 · Latest edition 2003Open the Tome
Learned societies and the evolution of the disciplinesSaul Bernard Cohen · First published 1988Open the Tome
Experiencing the environmentSeymour Wapner, Saul Bernard Cohen, Bernard Kaplan · First published 1976Open the Tome
