Taxonomy and biology of the subfamily berosinae of North and Central America, and the West Indies (Coleoptera : Hydrophilidae) - Van Tassell, Eileen Rose 1939- (University Microfilms, 1986)
Microfilmado de: Washington : E. R. Van Tassell, 1966. Tesis (doctorado en Filosofia)-- Catholic University of America, 1966.