Isikwue, B.C., Aiji, A.A. and Echi, M.I. 2014. Preliminary Investigation of The Attenuation of Solar Radation in The Atmosphere Over Makurdi, Nigeria. JOURNAL OF ADVANCES IN PHYSICS. 4, 1 (Mar. 2014), 392–396. DOI:https://doi.org/10.24297/jap.v4i1.2047.