Produkt mají v nabídce:
Common Nymphs of Eastern North America - Tzilkowski, Caleb J. (Aquatic Ecologist, National Park Service, Eastern Rivers and Mountains Network) a Stauffer Jr., Jay R. (Distinguished Professor of Ichthyology, Penn State)
A guide for identifying and imitating nymphs, with a focus on flyfishing. Also provides information useful to students, stream conservationists, and scientists concerned with monitoring the health of stream ecosystems.
