Firth, F. E. (1969). The encyclopedia of marine resources. Van Nostrand Reinhold.
Chicago-čujuhus (17. p.)Firth, Frank E. The Encyclopedia of Marine Resources. Nueva York: Van Nostrand Reinhold, 1969.
MLA-čujuhus (9. p.)Firth, Frank E. The Encyclopedia of Marine Resources. Van Nostrand Reinhold, 1969.
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