Ruttner, Franz. "PREFACE TO THE SECOND EDITION".
Fundamentals of Limnology, edited by D.G. Frey and F.E.J. Fry, Toronto: University of Toronto Press, 1953, pp. VI-vi.
https://doi.org/10.3138/9781487573782-002
Ruttner, Franz. "PREFACE TO THE SECOND EDITION" In
Fundamentals of Limnology edited by D.G. Frey and F.E.J. Fry, VI-vi. Toronto: University of Toronto Press, 1953.
https://doi.org/10.3138/9781487573782-002
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