Studies of Nearctic aquatic insects
Subtitle: I. Nearctic alder flies of the genus Sialis (Megaloptera, Sialidae)
By: [by] H. H. Ross. II. Descriptions of Plecoptera [by] T.H. Frison. Printed by authority of the State of Illinois.
Contributors: Ross, Herbert Holdsworth, 1908-; Frison, Theodore Henry, 1895-1945.
Published: 1937
Place of publication: Urbana, Ill
Language: eng
Number of pages: 99
Subjects: Sialis.; Insects -- Illinois.; Stoneflies.
Notes: Bibliography: p. 77, 97-98.
At head of title: State of Illinois. Henry Horner, Governor. Department of Registration and Education. Division of the Natural History Survey. Theodore H. Frison, Chief.