PDF-DISTRIBUTIONS
SO
anderson
Published 2020-11-25 | 4944 Views
Vol
97
No
5
November December
1986
193
HOLARCTIC
OF
THREE
TAXA
OF
HEPTAGENIIDAE
EPHEMEROPTERA
1
RW
Flowers
2
ABSTRACT
Two
closely
related
PalearcticNearctic
species
pairs
in
the
Heptageni
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