http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Contributions to the knowledge of the freshwater algae of Italy
GROENBLAD, Rolf.--Contributions to the knowledge of the freshwater algae of Italy.With 7 text-fig. and 14 pl.- Helsingfors 1960. 64 S. 8°--(Soc. scient. Fennica. Commentationes biologicae. 22,4.)--1962 ! Ho°
Soc. scient. Fennica. Commentationes biologicae. 22,4