Ökologische Wassergüte-Untersuchungen in Stauhaltungen des UntermainsWilli ZieglerVyprodáno4,3Pohlídat
Papers on conodonts and ordovician to triassic conodont stratigraphyWilli ZieglerVyprodáno4,3Pohlídat
Conodont biochronology, biofacies, taxonomy, and event stratigraphy around Middle Frasnian Lion Mudmound (F2h), Frasnes, BelgiumWilli ZieglerVyprodáno4,3Pohlídat