4 1 10 Dowswell, C.R. Additional Author Lamberti,F, Taylor,C.E and Seinhorst,J.W. Additional Author mixed material London Plenum Press 1975 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 Pervaiz Amir Additional Author Marcel,Z Additional Author mixed material USA FAO 1955 Zulfiqar Ahmad Additional Author Khallel, A. Additional Author Mani,M.S Additional Author mixed material Netherland Dr.W.Junk B.V.,Publishers, The Hague 1974