NWAFOR, P. A.; EKPO, E. .; UDOFIA, E. E. .; SMITH, M. E. . Effects of Methanol Extract of <em>Piper umbellatum</em> Leaves on Contraceptive and Sexual Behaviour in Rodents. Nigerian Journal of Pharmaceutical and Applied Science Research, [S. l.], v. 1, n. 2, p. 1–14, 2012. Disponível em: https://nijophasr.net/index.php/nijophasr/article/view/20. Acesso em: 2 may. 2024.