TY  - GEN
AU  - Edirisinghe, E.A.D.N.D.
AU  - Nanayakkara, P.K.D.I. 
AU  - Wijesinghe, H
AU  - Kotagama , S.W. 
TI  - Foundation course of study level one zoology block 1
U1  - 591.1 
PY  - 1988///
CY  - Nugegoda
PB  - Oxford University
ER  -