1.
Khalid A-M, Ayamga M, Dans-Abbeam G. ASSESSING THE PRODUCTIVE EFFICIENCY AMONG SMALLHOLDER COWPEA FARMERS IN NORTHERN GHANA. UDSIJD [Internet]. 2019Jun.29 [cited 2026Apr.1];6(1):44-61. Available from: https://www.udsijd.org/index.php/udsijd/article/view/340