Most Popular Books
- Populations of small mammals under natural conditions: A symposium, held at the Pymatuning Laboratory of Ecology, May 14-16, 1976 (The Pymatuning symposia in ecology)
- The ecology of algae: a symposium held at the Pymatuning Laboratory of Field Biology on June 18 and 19, 1959
- The Vertebrates of Pennsylvania and Adjacent Areas: With Keys to the Species, Exclusive of Birds
