A preliminary report on the Protozoa of the fresh waters of Connecticut,
by Herbert William Conn.
- [Hartford], Hartford press, The Case, Lockwood & Brainard company, 1905.
- 69 p., 1 l. xxxiv pl. 23 cm.
- Connecticut. Geological and natural history survey. Bulletin no. 2 .
State of Connecticut. Public document no. 47. Brief descriptive text on verso of plates.