Hannerz, Lennart <br/><br/>
Larval development of the polychaete families Spionidae Sars, Disomidae Mesnil, and Poecilochaetidae N. Fam. in the Gullmar Fjord (Sweden) 

 - Uppsala  : Almqvist & Wiksells Boktryckeri AB  , 1956 
 - 204 p.