00526nam a2200169 a 450000500170000002000150001708200150003210000160004724500750006326000400013830000180017869000520019696400190024899700120026799900170027995200600029620251203091754.0  a0824720547  a020.3bENC  aKent, Allen  aEncyclopedia of Library and Information science, Vol.54, Supplement-17  aNew YorkbMarcel Dekker, INC.c1994  a400p.c24 cm.  aEncyclopedia of Library and Information science  bEngcdefg_  a84128 C  c52183d52183  00104070aPUbPUd1998-04-08l0o020.3 ENCp84128yBK