Muhammad Eisa A class of estimators for finite population mean to deal with non-response bias in sample survey / Muhammad Eisa - Islamabad: Allama Iqbal Open University, 2017. - xii, 126p. MPhil Thesis Subjects--Topical Terms: Sampling (statistics)Mathematical statisticsDissertations, Academic--MPhil Statistics Dewey Class. No.: 519.5 / EIC