Mehr Schutz vor überhöhten Telefonrechnungen
Assistenz ; 43 , 6 ; 37-38
1994
Article (Journal)
German
Local classification TIB: | 020/1915/1970 | |
BKL: | 83.72 / 83.71 |
European Patent Office | 2017
|European Patent Office | 2018
|Automotive engineering | 2015
|European Patent Office | 2017
|British Library Online Contents | 2004