TY  - BOOK
TI  - Science investigations  = විද්‍යා ගවේෂණ
U1  - 505 
CY  - Colombo
PB  - National Science Council of Sri Lanka
KW  - Science-Periodicals
KW  - Science
KW  - Investigations
N1  - Include : No. 1 June 1981, No. 2 June 1982, No. 3 February 1984, No. 4 December 1988 &  No. 6  1992
ER  -