R. H. Etwir

Characterization of trace elements in medicinal herbs by instrumental neutron activation analysis

A. Bashir, I. Abugassa, K. Doubali, 2008 .

Determination of iodine and bromine in fish samples by radiochemical neutron activation analysis

H. A. Das, R. H. Etwir, E. A. Arafa, 2000 .

Neutron activation analysis of major and trace elements in crude petroleum

R. H. Etwir, M. Musa, E. A. Arafa, 1995 .