| Citation | Holden, M.J., 1981. Long term changes in landings of fish from the North Sea with particular reference to the periods 1930-38 and 1960-69. Symposium on the Changes in North Sea Fish Stocks and their Causes. No. 15. |
| DOI / ISBN | |
| Paper URL | |
| Ref. No. | 10258 |
| Language | English |
| Usage | not seen |
| Remarks | Please check source. |
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