http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
pt. 1. With especial reference to the "accessory chromosome".--pt. 2. A comparative study of the heterochromosomes in certain species of Coleoptera, Hemiptera and Lepidoptera, with especial reference to sex determination.
Each plate preceded by leaf with descriptive letterpress included in pagination.
Bibliography: pt. 1, page 19; pt. 2, pages 57-58.
Carnegie Institution of Washington publication ; 36, t. I-II