N. S. Hanna

The seasonality of zooplanktivorous fish in an African reservoir (Gebel Aulia Reservoir, White Nile, Sudan)

F. Schiemer, N. S. Hanna, 2004, Hydrobiologia.

The seasonality of zooplanktivorous fish in an African reservoir (Gebel Aulia Reservoir, White Nile, Sudan)

F. Schiemer, N. S. Hanna, 2004, Hydrobiologia.

Responses of electric fish (family mormyridae) to inorganic nutrients and triubinryltin oxide

J. W. Lewis, N. S. Hanna, A. N. Kay, 1995 .

Responses of the electric fish Gnathonemus tamandua (family mormyridae) to changes in ph

J. W. Lewis, N. S. Hanna, A. N. Kay, 1992 .

Responses of electric fish (Family Mormyridae) to chemical changes in water quality: II. Pesticides

J. W. Lewis, N. S. Hanna, A. N. Kay, 1992 .

Responses of electric fish (Family Mormyridae) to chemical changes in water quality: III. Heavy metals

J. W. Lewis, N. S. Hanna, A. N. Kay, 1994 .