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 22 pp., 7 figs. Edinburgh. 

 1918. A criticism of Reibisch's otolith-method of estimating the age of the plaice. Journal 

 of Zoological Research, 1918, Vol. Ill, Ft. I, pp. 13-29, 17 figs. 

 Williamson, W. C. 



1851. Inve.stigations into the structure and development of the scales and bones of fishes. 

 Philosophical Transactions, Royal Society of London, Vol. CXLI, 1851, pp. 643-702. 

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 WiNGE, Otto. 



1915. On the value of the rings in the scales of the cod as a means of age determination. Illus- 



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 s0gelser, serie Fiskeri, Vol. IV, 1915, Nr. 8, 21 pp., I PI. K0benhavn. 

 WUNDSCH, H. H. 



1916. Neue Beitrage zu der Frage nach dem Alter und Wachstum des Aales. Zeitschrift 



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