Gupta, V.J..
Upper Palaeozoics of the Himalaya / - 1st ed / - Delhi-7 : Hindustan Publishing Corporation , 1982 - p.236 :
H52.4497 / L9
Upper Palaeozoics of the Himalaya / - 1st ed / - Delhi-7 : Hindustan Publishing Corporation , 1982 - p.236 :
H52.4497 / L9