12 1 50 merging mass and interpersonal processes Robert P. Hawkins Additional Author John M. Wilmann Additional Author mixed material Sage Pub 1988 Robert J Verzello Additional Author John Reuter III Additional Author mixed material McGraw Hill 1982 Robert L.Morris Additional Author John R.Miller Additional Author mixed material McGraw Hill 1975 Robert L Morris Additional Author John R.Miller Additional Author mixed material McGraw Hill 1975 Robert L Moris Additional Author John R.Miller Additional Author mixed material McGraw Hill 1975 Robert D. Ainsbury Additional Author John Kiccullen Additional Author mixed material Dinastindo 1993 John K.Vennard Additional Author Robert L.Street Additional Author mixed material John Wiley & Sons 1982 Robert N. Anthony Additional Author John Dearden Additional Author mixed material Richard D. Irwin,Inc 1980 Robert C.Freid Additional Author John M.Praknitz Additional Author mixed material Gramedia 1991 Robert N. Anthony Additional Author John Dearden Additional Author mixed material Erlangga 1989 Robert N. Anthony Additional Author John Dearden Additional Author mixed material Erlangga 1991 a guide to fusion welding and associated cutting processes Peter Houldcroft Additional Author John Robert Additional Author mixed material ESAB 1988