TY  - CHAP
A1  - Reitner, Joachim
A1  - Keupp, H.
ED  - Reitner, Joachim
T1  - The fossil record of the Haplosclerid excavating sponge Aka de Laubenfels
T2  - Fossil and recent sponges
T2  - Fossil and recent sponges
Y1  - 1991
DO  - 10.23689/fidgeo-1806
PB  - Springer
CY  - Berlin [u.a.]
UR  - http://hdl.handle.net/11858/00-1735-0000-0001-33B3-D
ER  -