00277nam a2200109 a 450000500170000002000150001708200170003210000190004924500490006826000300011730000200014720251203091620.0  a0415901219  a302.23,bulm  aUlmer, Gregory  aTeletheory: grammatology in the age of video  aNew York: Routledgec1989  axii,257p.c22cm