8,517 Husna Zolkepli 2020-01-20 http://my.iita.org/accession2/search.jspx?q=Psophocarpus+tetragonolobus The International Institute of Tropical Agriculture (n.d.). IITA Accessions 2. Retrieved from http://my.iita.org/accession2/search.jspx?q=Psophocarpus+tetragonolobus