TY  - BOOK
AU  - Simmonds J 
AU  -  MacLennan D
TI  - Fisheries acoustics : Theory and practice .-2nd Ed
SN  - 9780632059942
U1  - 639.2 SIM 
PY  - 2007///
PB  - Blackwell Publishing/Blackwell Science, Oxford
ER  -