Quddus, K.G., M.J. Uddin, S.A.K.U. Khan, and M.J. Abedin. “COMPARATIVE SOIL FERTILITY STUDY ON GHIOR, GOPALPUR, ISWARDI AND SARA SERIES”. Khulna University Studies (November 29, 2000): 343–347. Accessed April 23, 2025. https://kus.ku.ac.bd/kustudies/article/view/704.