7 1 10 Byerlee, D. Additional Author Kiramat Khan Additional Author Munir Ahmad Additional Author Mohammad Saleem Additional Author Stevens, E.J. Additional Author Snell,E.E, Boyer,P.D, Meister,A and Richardson,C.C Additional Author mixed material California Annual Reviews Inc, Palo Alto, California, 1974 Byerlee, D. Additional Author Stevens, E.J. Additional Author M. Ramzan Akhtar Additional Author Heisey, P.W. Additional Author Lowe,J.L Additional Author mixed material USA State University College of Forestry 1957 Conrat,H.F and Wagner,R.R. Additional Author Byerlee, D. Additional Author Stevens, E.J. Additional Author M. Qasim Chathe Additional Author Muhammad Salim Additional Author mixed material New York Plenum Press. 1974 M. Afzal Additional Author Stevens, E.J. Additional Author M. Aslam Additional Author Pryor,L.D Additional Author Gardner, C.O. Additional Author M. Saleem Additional Author mixed material Pakistan Forest Insititute The Pakistan Journal of Forestry (Vol,18) 1968 Vol. II) Byerlee, D. Additional Author Stevens, E.J. Additional Author M. Ramzan Akhtar Additional Author Heisey, P.W. Additional Author Sargent,C,S Additional Author mixed material New York Dover Publications, Inc 1949 Byerlee, D. Additional Author Stevens, E.J. Additional Author M. Qasim Chatha Additional Author Mohammed Salim Additional Author Lerche,C and Khan,A.S Additional Author mixed material Peshawar Pakistan Forest Institute, Peshawar 1967 Mohammad Aslam Additional Author Byerlee, D. Additional Author Stevens, E.J. Additional Author M. Qasim Chatha Additional Author Jellicoe,G.A Additional Author mixed material London Oxford University Press 1960