TY - BOOK ID - 2253630 TI - Viewdata in action : a comparative study of Prestel PY - 1981 SN - 0070845484 PB - London New York Paris McGraw-Hill DB - UniCat KW - Videotex KW - Videotex systemen KW - Videotex systems KW - #WBIB:dd.Ir. E. De Hert KW - Videotex (Data transmission system) KW - Videotext systems KW - Viewdata systems KW - Data transmission systems KW - Interactive videos KW - Television display systems KW - Videotex systems. UR - https://www.unicat.be/uniCat?func=search&query=sysid:2253630 AB - ER -