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by Kenneth A. Spencer ; with illustrations by Ann Spencer
Kluwer Academic Publishers 1990 Series entomologica v. 45
Available at 7 libraries
by Kenneth A. Spencer
Royal Entomological Society of London 1972 Handbooks for the identification of British insects v. 10. pt. 5(g)
Available at 2 libraries
[by] Erich M. Hering ; selected, edited and annotated by Kenneth A. Spencer
The Hague , W. Junk N. V. c1968
Kenneth A. Spencer
Departamento de Zoologia, Secretaria da Agricultura [1967] A catalogue of the Diptera of the Americas south of the United States 83
Available at 1 libraries