PERIPHERIE-STEUEREINRICHTUNG
YANKOV, ANGEL VASSILEV, PRIMOV, IVAN STEFANOV, DILKIN, NIKOLAY GALILEEV, PLOVDIV, BG, SPASSOV, PETER GEORGIEV, ANTONOV, DIMO PETROV, SOFIJA, BG, KOLENZOV, YANKO ATTANASSOV, KANALEV, SVETLOSAR KONSTANTINOV, PLOVDIV, BG, ATANASSOV, LYUBEN PASKALEV, VULEV, DECHO IVANOV
Year of Publication 22.02.1990
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Year of Publication 22.02.1990
Patent