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- Modemy, faxy, BBS a počítačová komunikace / Petr ČESENEK . Praha : GRADA Publishing, 1996 . 175 s . ISBN 80-7169-171-2 . [2, currently available 2]
book
- Modemy, faxy, BBS a počítačová komunikace / Petr ČESENEK . Praha : Grada Publishing, 1995 . 180 s . ISBN 80-7169-171-2 . [1, currently available 1]
book
- Modemy, BBS a počítačová komunikace / Petr ČESENEK . Praha : Grada a.s., 1993 . 130 s . ISBN 80-85623-11-0 . [3, currently available 3]
book