Who wrote famous book Kitab-ul-hind?

Kitab al-Hind is the result of long years of hard work and Al-Biruni’s perseverance, and in many ways mark a departure from the existing historical and narrative traditions prevalent in the country till then. Unlike the prevalent Puranic traditions of recording the genealogies or the west Asian Tarikh tradition of narrating the political history in a chronological manner, the work is of a very critical nature.