by Anuforom, A.C, Akeh, L.E., Okeke, P.N., Opara, F.E.
Published in Atmospheric environment (1994) (01.03.2007)

by Okere, B. I., Okoh, D. C., Obi, I. A., Okeke, P. N., Opara, F. E.
Published in Proceedings of the International Astronomical Union (01.08.2012)

by OPARA, F. E
Published in Astrophysics and space science (01.03.1994)

by Opara, F. E.
Published in Astrophysics and space science (01.08.1994)

by Mammah, S L, Opara, F E, Sigalo, F B, Ezugwu, S C, Ezema, F I
Published in Materials sciences and applications (01.11.2012)

by Mammah, S. L., Opara, F. E., Sigalo, F. B., Ezugwu, S. C., Ezema, F. I.
Published in Materials sciences and applications (2012)