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Keys to The Insects of The European Part of The USSR
George C. Steyskal
· 1989
Spruce Budworms Handbook: Using Dendrochronology to Measure Radial Growth of Defoliated Trees
Kenneth A. Spencer
, Otto Suchsland
, George C. Steyskal
· 1985
Studies of Neotropical Caddis Flies: Types of Some Species Described by Ulmer and Brauer. II
Abraham Fleminger
, Cadet Hand
, Donald J. Reish
, Edward L. Todd
, George C. Steyskal
, Hahn William Capps
, Leonard Peter Schultz
, Louis S. Kornicker
, Oliver S. Flint
, United States National Museum
, William Stephenson
, May Rees
, Ralph Bushnell
· 1966
Pictorial Key to Species of the Genus Anastrepha (Diptera: Tephritidae)
George C. Steyskal
· 1977
Manual of the Agromyzidae (Diptera) of the United States
Kenneth A. Spencer
, George C. Steyskal
· 1986
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New Stratiomyidae and Tetanoceridae, Diptera, from North America, by George C. Steyskal
George C. Steyskal
No image available
Manual of the Agromyzidae (Diptera) of the United States: Eby Kenneth A. Spencer and George C. Steyskal
Kenneth Angus Spencer
· 1986
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A New Ant-attacking Fly of the Genus Pseudacteon...
George C. Steyskal
· 1944
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Australasian Stilt-legged Flies (Diptera : Tylidae) in the United States National Museum, by George C. Steyskal
George C. Steyskal
· 1952
No image available
Family Tanypezidae ...
George C.. Steyskal
· 1967