GUPTA. S. P. STATISTICAL METHODS : CONTAINS BESIDES THEORY MORE THAN 1500 FULLY SOLVED ILLUSTRATIONS AND ABOUT 2000 PROBLES WITH HINTES AND ANSWAERS. - 46TH ED. - NEW DELHI SULTAN CHAND AND SONS. 2023 - A.43 - EC . ENGLISH ISBN: 978-93-5161-176-9 Dewey Class. No.: 001.422 GUP