An analysis of toads of the Bufo americanus group in a contact zone in central northern North America /

by Cook, Francis R, Cook, Francis R
Published 1983

Introduction to Canadian amphibians and reptiles /

by Cook, Francis R, Cook, Francis R, Cook, Francis R
Published 1984

Les noms français des amphibiens et reptiles du Canada : une liste provisoire /

by Ouellet, Henri