Trace element analysis of obsidian artifacts from El Mirador, GuatemalaFred W. Nelson · First published 1986Open the Tome
Governmental institutions and processesFred I. Greenstein, Nelson W. Polsby · First published 1975Open the Tome
Handbook of political scienceFred I. Greenstein, Nelson W. Polsby · First published 1975Open the Tome
Political science, scope and theoryFred I. Greenstein, Nelson W. Polsby · First published 1975Open the Tome
Archaelogical investigations at Dzibilnocac, Campeche, MexicoFred W. Nelson · First published 1973Open the Tome
Archaeological investigations at Dzibilnocac, Campeche, MexicoFred W. Nelson · First published 1973Open the Tome
