World Fisheries Abstracts. Volume 12 (1961)
1 / Volume 12, No. 1 (January/February 1961)
2 / Volume 12, No. 2 (March/April 1961)
3 / Volume 12, No. 3 (May/June 1961)
4 / Volume 12, No. 4 (July/August 1961)
5 / No. 5 (1961) ??????
6 / Volume 12, No. 6 (November/December 1961)