Schottelndreyer, BurkhardTrail, Ronald L.Rathod, H. T.Chand, G.Roy, C.Shrestha, I.Tuladhar, N. M.2021-12-022021-12-02858832062PL-A53.125http://hdl.handle.net/1885/254395application/pdf© 1980 Burkhard Schottelndreyerhttp://creativecommons.org/licenses/by-sa/4.0198010.15144/PL-A53.125 2021-12-02Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)