Yadav SK, Kadilar C. A CLASS OF RATIO-CUM-DUAL TO RATIO ESTIMATOR OF POPULATION VARIANCE. JRSS [Internet]. 2013 Jun. 3 [cited 2026 May 12];6(01):29-34. Available from: https://journals.riverpublishers.com/index.php/JRSS/article/view/21883