Suliman, A., Jepreel, H. T., A. Warrag, M. O. and Idris, T. I. M. (2019) “Responses of Periwinkle (Catharanthus roseus) to soil and foliar applications of Haza (Haplophyllum tuberculatum).”, GPH-International Journal of Agriculture and Research, 2(05), pp. 01-13. Available at: https://gphjournal.org/index.php/ar/article/view/221 (Accessed: 25April2024).