Abdulhamid, H., Musa, A. A, Musa, A. DETERMINANTS OF MARKET PERFORMANCE AND CONSTRAINTS OF COWPEA (Vigna unguiculata L.) MARKETING AMONG RETAILERS IN YOBE STATE, NIGERIA. njaat [Internet]. 2026 Sep. 28 [cited 2026 Oct. 1];6(3B):62-7. Available from: https://njaat.com.ng/index.php/njaat/article/view/1772