Sohail Ahmad Modified nelson- aalen estimator : M.Phil Statistics Sohail Ahmad - Islamabad: AIOU, 2019. - xiv, 89p. HB Eng Standard No.: https://i.ibb.co/DcNFC41/Thesis-cover.png Subjects--Topical Terms: Estimation theory-Nelson-Aalen Dewey Class. No.: 519.544 / SOM