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		Almost Unbiased Ratio Type Estimators of Population Mean Using Two Auxiliary Attributes in Systematic Sampling by Hussain, Zawar Shabbir, Javid Khan, Zaheen Source: Proceedings of Pakistan Academy of Sciences Material type: Article; Format: print Availability: Items available for loan: Engr Abul Kalam Library (1). Request article
		A Dual to Variance Ratio-Type Estimator in Simple Random Sampling by Shabbir, Javid Source: Proceedings of Pakistan Academy of Sciences Material type: Article; Format: print Availability: Items available for loan: Engr Abul Kalam Library (1). Request article
		on an Efficient Ratio Type Estimator by Shabbir, Javid Source: Proceedings of Pakistan Academy of Sciences Material type: Article; Format: print Availability: Items available for loan: Engr Abul Kalam Library (1). Request article
		Efficiency and Bias Reduction in Ratio Estimation Under a Model by Gupta, Sat Shabbir, Javid Source: Proceedings of Pakistan Academy of Sciences Material type: Article; Format: print Availability: Items available for loan: Engr Abul Kalam Library (1). Request article

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