Sanusi, S.M. 2020. Price Transmission and Signals of Cowpea Across Zones and Value Chain in Niger State of Nigeria: Price Transmission and Signals of Cowpea Across Zones and Value Chain in Niger State of Nigeria. B.R. Nahata Smriti Sansthan Agricultural Extension Journal (AEXTJ). 3, 4 (Jan. 2020). DOI:https://doi.org/10.22377/aextj.v3i4.188.