TY  - BOOK
AU  - Needham,James G.
TI  - Burrowing mayflies of our larger lakes and streams
T2  - United States. Bureau of fisheries
AV  - QL513.E7 N4
PY  - 1920///
CY  - Washington
PB  - Govt. Print. Off.
KW  - Mayflies
KW  - North America
N1  - From Bulletin of the Bureau of fisheris, vol xxxvi, 1917-1918; Plates printed on both sides; Bibliography: p. 288-290
ER  -