"E." . "Elewhemba Nnata" . "Johnson E. Nwaguru" . "J. E. N. Nwaguru"@en-AU . "Nwaguru" . "Johnson Elewhemba Nnata Nwaguru" . . . "Johnson Elewhemba Nnata N. Nwaguru" . "1935" . . "Johnson Elewhemba Nnata Nwaguru" . "Elewhemba Nnata N." . "Johnson" . . .