Litteraturforteckning. 



1. Aim, Gunnar. Undersokningrar rorande Hjalmarens natur- 



forhallanden och fiske. Meddelanden fran Kungliga Lant- 

 bruksstyrelsen N:o 204. 1917. 



2. Brofeldt, Pekka. Om fiskarna och fiskeriforhallandena i 



Thusby trask samt anvisningar till deras forbattrande. 

 Finlands fiskerier 1915. 



3. — „ — Bidrag till kannedomen om fiskbestandet i vara sjoar. 



Finlands fiskerier 1917. 



4. Dahl, Knut. The Scales of the Herring as a Means of deter- 



mining Age, Growth and Migration. Report on Norwegian 

 Fishery and Marine Investigations Vol. II. 1907. N:o 6. 



5. Jdrvi, Th. Siklojan i Finska sjoar. I. Keitele. Finlands 



fiskerier Band 5. 1919. 



6. Jddskelciinen, Viljo. Om fiskarna och fisket i Ladoga. Fin- 



lands fiskerier 1917. 



7. Lea, Einar. On the Methods used in the Herringinvestiga- 



tions. Ingar i Report on Herring-investigations until 

 January 1910 by Johan Hjort. Publ. de circonstance 

 N:o 53. 1910. 



8. — „ — Further Studies concerning the Methods of calcu- 



lating the Growth of Herrings. Publ. de circonstance. 

 N:o 66. 1913. 



9. Lee, Rosa. An Investigation into the Methods of Growth- 



determination in Fishes. Publications de circonstance. 

 N:o 63, 1912. 

 10. Olstad, 0. Undersokelser over Abbor. Fiskeri-inspektorens 

 innberetning om ferskvandsfiskerierne aret 1916. 1919. 



