Physicochemical Analysis of Sumbul-al ?Teeb (Nardostachys jatamansi D.C.) Rhizome along with its HPLC Profile, Rashid, Mohammad, Rahman Aziz ur, Ahmad Qazi Zaid,, and Mian Syed Shariq , Pharmacognosy Journal, January 2018, Volume 10, Issue 2, p.278-284, (2018)