@book{54016,
	author = {Asad Ullah (21584)},
	title = {Improved ratio and regression estimator of population mean in simple random sampling },
	publisher = {(Unpublished)},
	year = {2023},
	address = {Islamabad},
	note = {Submitted in partial fulfillment of the requirements for the degree of Master of Philosophy in Statistics to the Department of Basic Sciences.}
}