Medieval studies in honor of Robert White LinkerRobert White Linker, James Woodrow Hassell, John Esten Keller · First published 1973Open the Tome
Radiant KidsKaren Kipke, Robert Hassell, Nichole Terry, Susan Murray · First published 2016Open the Tome
Population, regulation and dynamicsMichael P. Hassell, Robert M. May · First published 1991Open the Tome
