Вие търсихте за: автор = Nikolov, Rumen Vasilev
Seventh European Logo Conference EuroLogo`99, Sofia, 22-25 Aug. 1999 : Proceedings / Ed. by Roumen Nikolov et al . - Sofia : Virtech, 1999. - 448 p. : ill. ; 29 сm. Други ред. : E. Sendova, Il. Nikolova, Iv. Derzhanski .- Офс. изд .- 100 тир. ISBN: 954-9582-03-5 УДК 519.682(063)+681.322.06(063)
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