TY  - BOOK
AU  - Macan,T.T, x
AU  - x
TI  - A guide to freshwater invertebrate animals: x
SN  - x 
U1  - 574.929/MAG 
PY  - 1968///
CY  - Lond.
PB  - Longmans
KW  - Fresh Water-Biology
KW  - Biology
ER  -