Schindler O. author 1934 Ontogenie Fisch Thymallus Esox Perca Cyprinus exported from refbase (http://www.pivi.de/refbase-0.9.5/show.php?record=2136), last updated on Sat, 08 Aug 2026 03:23:51 +0200 text Schindler1934 254 Zeitschrift, Artikel 305 319