Worldwide Bibliography of Aquatic and Semiaquatic Dryopoidea
http://research.calacademy.org/research/entomology/Entomology_Resources/Coleoptera/dryopoidea/index.html
Worldwide Bibliography of Aquatic and Semiaquatic Dryopoidea
http://research.calacademy.org/research/entomology/Entomology_Resources/Coleoptera/dryopoidea/index.html