TY  - BOOK
AU  - Abeydeera, Nilmini.
AU  - Abeydeera, Padmini.
TI  - Grade 6 Secondary Mathematics
SN  - 9789556803839
U1  - 510 
PY  - 2016///
CY  - Colombo : 
PB  - Samudra Book Publications, 
ER  -