00505pamaa2200169 4500 0000029443 20090608090000.0 0534377807 004.6 GAL TK5105.5 GAL 2002 GALLO Computer communications and networking technologies Michael A. Gallo and William M. Hancock. Pacific Grove: Brooks/ Cole, 2002. xxiii, 632p.; 26cm. Computer networks Telecommunication Hancock, William M.