35.50
- Describes more than 200 of the region's most common and distinctive butterflies
- More than 600 superb color photographs
- 17 illustrative plates for comparing and identifying species
- Nearly 200 range maps
- Clear color-coded layout
- Covers Oregon, Washington, and adjacent areas of British Columbia, Idaho, and California
- Essential reference for nature enthusiasts of all ages and skill levels

- : Robert Michael Pyle
- : Timber PR Inc
- : 9781604696936
- : Engels
- : Paperback
- : 464
- : april 2018
- : 794
- : 216 x 150 x 28 mm.
- : Timber Press Field Guide
- : Dierenrijk: vlinders, andere insecten en spinnen: algemeen
