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Valid Names for North America Species
Plecoptera Species File
Perla
Stonefly Publications from Caddis Press
NABS Plecoptera Workshop Manual
Triennial Meeting of North American Plecoptera Society-2009
New!!! South American Stonefly Book
Annual Newsletter and Bibliography of
The International Society of Plecopterologists
Perla 2005
Perla 2006
Perla 2007
Perla 2008
Perla 2009