TY  - BOOK
AU  - Zigla, Giuliano
TI  - Biological monitoring of rivers applications and perspectives 
SN  - 0470863765
AV  -  	DASF QH96.8.B9 
PY  - 2006///
CY  - London. 
PB  -  : John &Wiley.
KW  - Water quality biological assessment
KW  - Sream ecology
N1  - Includes bibliographical references and index
ER  -