Първични и вторични носови гласни в един западнородопски български говор von Iliev, Ivan G, Petkov, Petko

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On the tautomerism of 1-phenyl-3-substituted-pyrazol-5-ones and their photoinduced products — experimental and theoretical UV spectral analysis von Chapkanov, Atanas G., Koleva, Bojidarka B., Arnaudov, Michail G., Petkov, Ivan K.

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An unknown model for constructing the negative imperative in Bulgarian von Ivan G. Iliev, Petko D. Petkov

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Бележки за новобългарските писмено-диалектни езикови форми von Iliev, Ivan G, Petkov, Petko

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БЕЛЕЖКИ ЗА ФОРМИТЕ НА ДВЕ БЪДЕЩИ ВРЕМЕНА В БЪЛГАРСКИЯ ПРЕСЕЛНИЧЕСКИ ГОВОР В УЗУНКьОПРЮЙСКО von Iliev, Ivan G, Petkov, Petko

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TURBO- BORE von FILEV,STAMAT B, PETKOV,IVAN G

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INSTALLATION FOR CONDENSATE RETURNING BY VAPOUR HEATING SYSTEM von PETKOV,IVAN G

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HEDDLE MACHINE WITH ELECTROMAGNETIC COUPLING MECHANISM von TONEV,TONCHO P, CVETKOV,KRUM K, POPOV,DIMITR K, FILIPOV,PETKO A, PETKOV,IVAN G

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APPARATUS FOR WEFT REPLACEMENT IN LOOMS WITHOUT SHUTTLES AND WITH A CHANNEL WEFT-FEEDING BOX von PASKOV,KHARALAMPI N, TONEV,TONCHO P, CVETKOV,KRUM K, DUSHANOV,IVAN D, MINTOV,MIKHAIL G, FILIPOV,PETKO A, PETKOV,IVAN G

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ZARIZENI PRO ZAMENU BAREVNYCH UTKOVYCH NITI NA BEZCLUNKOVEM TKALCOVSKEM STAVU von FILIPOV PETKO A, PASKOV HARALAMPI N, TONEV TONTSCHO P, PETKOV IVAN G, MINTOV MIACHAIL G, USCHANOV IVAN D, ZVETKOV KRUM K

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ZARIZENI PRO ZAMENU BAREVNYCH UTKOVYCH NITI NA BEZCLUNKOVEM TKALCOVSKEM STAVU von FILIPOV PETKO A, PASKOV HARALAMPI N, TONEV TONTSCHO P, PETKOV IVAN G, MINTOV MIACHAIL G, USCHANOV IVAN D, ZVETKOV KRUM K

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APPARATUS FOR SEALING-AWAY THE ANNULUS OF WELL von GROZEV MARTIN V,SU, PETKOV IVAN G,SU, VLASOV PETR A,SU, KRYKH BORISLAV V,SU

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COLOUR WEFT THREADS' CHANGE DEVICE ON SHUTLESS LOOM von PASKOV,HARALAMPI N.,BG, ZVETKOV,KRUM K.,BG, MINTOV,MICHAIL G.,BG, TONEV,TONTSCHO,P.,BG, PETKOV,IVAN G.,BG, FILIPOV,PETKO A.,BG, DUSCHANOV,IVAN D.,BG

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DEPTH FLOWMETER FOR DRILL OPERATIONS von IVANOV,DIMITR I, KHRISTOV,KHRISTO K, PETKOV,IVAN G

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DISCONNECTOR FOR DRILL INSTRUMENT von IVANOV,DIMITR I, KRIKH,BORIS V, VLASOV, PETR A, PETKOV,IVAN G

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APPARATUS FOR SEALING OF OUTSIDE PIPE SPACE IN DRILLS von GROZEV,MARTIN V, KRIKH,BORIS V, VLASOV, PETR A, PETKOV,IVAN G

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Pα-Methyl Deoxynucleoside Triphosphates as Substrates for E. COLI DNA Polymerase I in a Template-Directed Synthesis of DNA von Dineval, Magda A., Ivanov, Ivan G., Petkov, Dimiter D.

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SUPPORTING BRACKET FOR BROACHING MACHINES von PETKOV,IVAN STEFANOV,BG, ENTCHEV,SLAVI GESHEV,BG, ZVETKOV,ZDRAVKO IVANOV,BG

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BG44788 von NENOV,DIMIT'R P.,BG, GANCHEVA,TAMARA S.,BG, PETKOV,IVAN I.,BG, MARINOVA,ATANASIJA T.,BG

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METHOD FOR OBTAINING GLASS CRYSTAL ENAMEL COATING ON METAL WORK- PIECES von B'CHVAROV,GEORGI A.,BG, PENKOV,IVAN G.,BG, GUCOV,IVAN S.,BG, POPOV,EMIL P.,BG, RAJJKOV,KHRISTO I.,BG, PETKOV,IVAN R.,BG

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