Beiträge zur kenntnis der süsswasserrotalge thorea ramosissima bory G. Uherkovich OriginalPaper Pages: 243 - 251
The vertical distribution of Larval Chironomidae (Dipt.) in the mud of a stream John B. Ford OriginalPaper Pages: 262 - 262
Nutria influence on a Bog Lake in Northern Pomorze, Poland S. EhrlichK. Jedynak OriginalPaper Pages: 273 - 297