title: In memoriam: Joel E. Keizer.
authors.affiliation: Department of Environmental Science and Policy, University of California, Davis, CA, USA.
authors.forename: A
authors.initials: A
authors.lastname: Hastings
mesh_terms: D001695:Biology / Q000266:history*; D049673:History, 20th Century; D008954:Models, Biological; D014481:United States