(1956). Ceylon Journal of Science (Section C-Fisheries), Vol.7 No.2 (1956). Colombo: University of Ceylon.
1956. Ceylon Journal of Science (Section C-Fisheries), Vol.7 No.2 (1956). Colombo: University of Ceylon.
Ceylon Journal of Science (Section C-Fisheries), Vol.7 No.2 (1956). Colombo: University of Ceylon. 1956.