TY  - BOOK
AU  - Parfin,Sophy I.
AU  - Gurney,Ashley B.
TI  - The Spongilla-Flies, With Special Reference to Those of the Western Hemisphere (Sisyridae, Neuroptera)
T2  - United States National Museum ; 
PY  - 1956///
CY  - Washington : 
PB  - Smithsonian Institution, 
ER  -