00371nam a22001337a 4500003000400000005001700004008004100021040000900062082001500071100004100086245006200127260003700189300001100226OSt20260807212558.0260807b        |||||||| |||| 00| 0 eng d  cLIRC  a371.35 VER  aVerduin, John R. and Clark Thomas A.  aDistance education : the foundation of effective practice  aSan FranciscobJossey Bassc1991  a279 p.