American Political Development and the Trump PresidencyZachary Callen, Philip Rocco · First published 2020Open the Tome
Local Elections and the Politics of Small-Scale DemocracyJ. Eric Oliver, Shang E. Ha, Zachary Callen · First published 2012Open the Tome
A Guide for evaluating environmental impacts on aquatic ecosystems in the Susquehanna River BasinJed Zachary Callen · First published 1974Open the Tome
