Text ( visual ) : unmediated Formulae and tables for statistical work / edited by C. Radhakrishna Rao ... [et al.]. -- 2nd ed. -- Calcutta : Statistical Publishing Society , 1975. -- xii, 256 p. ; 29 cm. -- (BA87185736) ; https://ci.nii.ac.jp/ncid/BA87185736 Author Heading(s): Rao, Calyampudi Radhakrishna ; Mitra, Sujit Kumar ; Matthai, Abraham ; Ramamurthy, K. G.