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EDITORS
Ryszard Kryza
Andrzej Żelaźniewicz

EDITORIAL BOARD
Maria Borkowska - President (Warszawa)
Jan Burchart (Warszawa)
Stefan Cwojdziński (Wrocław)
Jerzy Don (Wrocław)
Teresa Oberc-Dziedzic (Wrocław)
Kazimierz Dziedzic (Wrocław)
Wolfgang Franke (Giessen)
Vaclav Kachlik (Praha)
Stanisław Lorenc (Poznań)
Szczepan Porębski (Kraków)
Antonin Přichystal (Brno)
Max Schwab (Halle)
Witold Smulikowski (Warszawa)

EDITORIAL OFFICE
ul. Podwale 75, PL-50449 Wrocław, Poland fax: (+48)71-3418231, or
pl. Maksa Borna 9, PL-50204 Wrocław, Poland fax: (+48)71-3201371

Copyright by:
Instytut Nauk Geologicznych PAN
Instytut Nauk Geologicznych UWr

ISSN 0072-100X

DISTRIBUTION
This and earlier issues can be ordered and purchased at the following adresses:
Institute of Geological Sciences PAS, Library, Twarda 51/55, 00-818 Warszawa, Poland
Institute of Geological Sciences, Wrocław University, Library, Cybulskiego 30, 50-205, Wrocław, Poland