00565cam a2200181 7i4500 0000003678 20050516090000.0 9251011613 SH 1 F2 Burczynski Introduction to the use of sonar systems for estimating fish biomass by J. Burczynski. Rome: FAO, 1982. 89 p.: ill.; 28 cm.. Sonar in fishing Fish detection Echo sounding 1000382362 Book Open Shelf KOLEKSI TERBUKA 1900040291 Book Open Shelf KOLEKSI TERBUKA