TY  - SER
AU  - Dankers,N.
AU  - Scholl,M.
AU  - Smith,C.J.
ED  - International Wadden Sea Symposium
TI  - 	Proceedings of the 7th International Wadden Sea Symposium, Ameland 1990
PY  - 1992///
CY  - Texel : 
PB  - Netherlands Institute for Sea Research
ER  -