TY  - BOOK
AU  -  Bick,Hartmut
TI  -  Ciliated protozoa; : an illustrated guide to the species used as bi ological indicators in freshwater biology
U1  -  593.17 BIC 
PY  - 1972///
CY  -  Geneva, 
PB  -  World Health Organization, 
KW  -  Ciliata
KW  -  Identification
KW  -  Indicators (Biology)
N1  -  Bibliography: p. 189-191
ER  -