Singh, Upinder. Prachin evam purva madhyakalin bharat ka itihaas / By Upinder Singh. - 2nd, ed. - Grugaon : Pengin Books, 2017. - 730 p. ; 00 cm. ISBN: 9788131774748 Subjects--Topical Terms: Biography, genealogy & insignia.HISTORY & GEOGRAPHY. Dewey Class. No.: 920.15 / SIN