The genera dermacentor and otocentor (Ixodidae) in the United States
Subtitle: with studies in variation.
Contributors: National Institutes of Health (U.S.)
Series: National Institute of Health bulletin -- no. 171; Bulletin (National Institutes of Health (U.S.)) -- no. 171.
Publisher: U.S. G.P.O.
Published: 1938
Place of publication: Washington
Language: eng
Number of pages: 89
Subjects: Ticks.