1.
Aquatic Dryopoid Beetles (Coleoptera) of the United States
by Brown, Harley P.
ISBN: 9781153448352
List Price: $20.00
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Aquatic Dryopoid Beetles (Coleoptera) Of the United States (Classic Reprint)
by Harley P. Brown
ISBN: 9780282289805
List Price: $9.57