TY  - BOOK
AU  - Indatissa, Nalini
AU  - Tennakoon, Seela
AU  - Wijewardana, Dharma
TI  - Secondary Science and Technology : book 9
SN  - 955-8975-00-1
U1  - 507 
PY  - 2004///
CY  - Kurunegala
PB  - IBH pub
KW  - Science &Technology
KW  - Science
ER  -