About Franz Ruttner FRANZ RUTTNER is the Director of the Lunz Biological Station at the Austrian Academy of Science. Books by Franz Ruttner Fundamentals of Limnology by (author) Franz Ruttner translated by D.G. Frey & F.E.J. Fry Fundamentals of Limnology by (author) Franz Ruttner translated by D.G. Frey & F.E.J. Fry