Ibrahim, T.H., Betiku, E., Solomon, B.O., Oyedele, J.O., Olaifa, G.O. and Adekunle, A.A. 2023. Validation of wet chemistry method as alternative to gas chromatography for biogas methane content determination. ARID ZONE JOURNAL OF ENGINEERING, TECHNOLOGY AND ENVIRONMENT. 19, 1 (Mar. 2023), 23-32.