The late Cenozoic ampullariidae (mollusca, gastropoda) of the Albertine Rift Valley (Uganda-Zaire) Dirk van DammeMartin Pickford OriginalPaper Pages: 1 - 32
Hydroacoustic monitoring of the distribution, density and the mass-removal of pelagic fish in a eutrophic lake Juha JurveliusIlkka Sammalkorpi OriginalPaper Pages: 33 - 41
A revision of the Simocephalus (latirostris) species group (Crustacea: Anomopoda: Daphniidae) Marina Ja. Orlova-Bienkowskaja OriginalPaper Pages: 43 - 58
Secondary metabolites of Ceratophyllum demersum V. BankovaP. IvanovaSt. Dimitrova-Konaklieva OriginalPaper Pages: 59 - 61
Plankton and hydrochemistry of Lake Futalaufquen (Patagonia, Argentina) during the growing season L. PizzolonN. SantinelliS. A. Menu-Marque OriginalPaper Pages: 63 - 73
Degradation of arsenobetaine to inorganic arsenic by bacteria in seawater Ken'ichi HanaokaOsamu NakamuraToshikazu Kaise OriginalPaper Pages: 75 - 80