http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
On the Variation of fishes in relation to environment
Johnsen, Sigurd: On the Variation of fishes in relation to environment
Johnsen, Sigurd: On the Variation of fishes in relation to environment. -- (Preliminary account.) — (Bergen 1936.) 26 S. 8° -- (Bergens Museums Årbok. Nat. R. 1936, 4.) -- 1: Ns 8506 – Nat. R. 1936, 4. 3 -- BZD