TY  - BOOK
AU  - Barth,Edvard K.
TI  - The Circumpolar systematics of Larus argentatus and Larus fuscus with special reference to the norwegian populations
T2  - Meddelelser Fra det Zoologiske Museum, Oslo
U1  - 598.338 23
PY  - 1968///
N1  - Referencias bibliográficas: p. 47-50
ER  -