How to get 2-digit ASI data for major industry with principal characteristics?

Using this link: http://www.mospi.gov.in/sites/default/files/main_menu/data_discremination/mospi_asi_rate_list.pdf We can get data from 1998-99 but how about earlier period? How to get 2-digit ASI...

14 January 2019 8,861 2 View