Authors
Ewa Szymczak
Institute of Oceanography, University of Gdansk, Gdynia, Poland
Halina Piekarek-Jankowska
Institute of Oceanography, University of Gdansk, Gdynia, Poland
© 2007 Ewa Szymczak, Halina Piekarek-Jankowska, published by University of Gdańsk
This work is licensed under the Creative Commons License.