4 1 10 Anon Additional Author Singh, M. Additional Author Dastane, N.G. Additional Author Hukkeri, S.B. Additional Author Vamadevan, V.K. Additional Author mixed material Azad Kahsmir Planning & Development Department 1988 Brewer, J.D. Additional Author Conner,R.C and Green,A.W Additional Author Raju, K.V. Additional Author mixed material Ogden, Utah USDA Forest Service 1990 Berg,B. Additional Author mixed material New York G.P.Putnam\'s Sons, The Knickerbocker Press 1930 Chaturvedi, M.C. Additional Author Mertins,J.W, and Coppel,H.C. Additional Author mixed material New York Springer-Verlag Berlin Heidelberg New York 1977