Jahangir, A. et al. 2008. Influence of Nitrogen - Phosphorus Fertilization and Time of Harvest on the Growth, Yield and Oil Content of <i>Mentha spicata</i> L. Bangladesh Journal of Scientific and Industrial Research. 43, 1 (Jun. 2008), 47–54. DOI:https://doi.org/10.3329/bjsir.v43i1.856.