Forschungsberichte aus der Biologischen Station zu Plön - Plön (Germany). Biologische Station. (Nägele, 1898)

Forschungsberichte aus der Biologischen Station zu Plön - Plön (Germany). Biologische Station. (Nägele, 1903)

Forschungsberichte aus der Biologischen Station zu Plön - Plön (Germany). Biologische Station. (Nägele, 1905)

Die frei lebenden Copepoden mit besonderer Berücksichtigung der Fauna Deutschlands, der Nordsee und des Mittelmeeres - Claus, Carl, 1835 -1899 (W. Engelmann, 1863)

Fresh-water aquaria: their construction, arrangement, and management, with full information as to the best water-plants and live stock to be kept, how and where to obtain them, and how to keep them in health - Bateman, Gregory Climenson. (L.U. Gill, 1890)

Fresh-water biology - Ward, Henry Baldwin, 1865 -1945 (John Wiley & sons, inc.; [etc.,etc.], 1918)

Fresh-water biology - Ward, Henry Baldwin, 1865 -1945 (John Wiley & sons, inc.; [etc., etc.], 1918)