TY  - BOOK
AU  - Harmer,Sydney F.
AU  - Boschma,H.
TI  - The Polyzoa of the Siboga-expedition: part 2. Cheilostomata anasca [...] 
PY  - 1926///
CY  - Leyden : 
PB  - E.J. Brill, 
ER  -