Columbia subject headings:
Computer networks--Government policy--Poland--Case studies.
Data protection--Government policy--Poland--Case studies.
Electronic data processing--Government policy--Poland--Case studies.
Harvard subject headings:
Communication, International--Case studies.
Computer networks--Government policy--Poland--Case studies.
Data protection--Government policy--Poland--Case studies.
Data transmission systems.
Electronic data processing--Government policy--Poland--Case studies.
Telecommunication--Poland.
Princeton subject headings: