| Avaa | Beach, M. H.
| Fish pass desing : criteria for te design and approval og fish passes and other structures to facilitate the passage of migratory fish in rivers | | moniste | joki - joet, rakennetut joet, vaellus | Ministery of Agriculture, Fisheries and Food Directorate of Fisheries Research | Lowestoft | 1984 | 46 | 0308-5589 | Fisheries Research Tecnical report No: 78 | | H-Vesistökunnostukset: Joet (avokotelo 6) |