6 1 10 Sekhon, G.S. Additional Author Chaudhry,M.I and Ahmad Muzaffer Additional Author mixed material Peshawar-Pakistan Pakistan Forest Institute, Peshawar 1972 Zeller, M. Additional Author Braun, J.Von. Additional Author John, K. Puetz. D. Additional Author Chaudhry,M.I and Ahmad,M Additional Author mixed material Pakistan Pakistan Forest Institute, Peshawar 1972 Boyce, J.K. Additional Author Chaudhry,M.I & Ahmad,M. Additional Author mixed material Peshawar Pakistan Forest Institute Peshawar 1972 Papadakis, J. Additional Author Chaudhry,M.I & Ahmad,M. Additional Author mixed material Peshawar Pakistan forest Institute 1972 Cutler, E.J.B. Additional Author Chaudhry,M.I, and Ahmad M. Additional Author mixed material Peshawar Pakistan Forest Institute, Peshawar 1972 Chaudhry,M.I, and Ahmad M. Additional Author Conference on Off-Highway Vehicles, Tractors and Equipment ( London) Additional Author mixed material Peshawar Pakistan Forest Institute, Peshawar 1972