Activity traps and the corer: complementary methods for sampling aquatic invertebrates - Hyvönen, Terho; Nummi, Petri (Kluwer Academic Publishers, 2000)
Keywords: Ys; aktiivisuuspyydys; putkinoudin; selkärangattomat; näytteenottomenetelmät; activity trap; corer; aquatic invertebrates; sampling methods