by DOBREVA, EKATERINA D, ENCHEVA, MILKA A, PETROV, KHRISTO B
Year of Publication 16.10.1989

by DOBREVA, EKATERINA D, ENCHEVA, MILKA A, LIRKOV, ALEKSANDAR L, TRENDAFILOV, ARKADIJ T, PETROV, KHRISTO B
Year of Publication 18.01.1994

by ENCHEVA,MILKA A, DOBREVA,EKATERINA D, RADEV,SIMEON G, BOSEVSKI,VALENTIN M, KIREV,SIMEON I
Year of Publication 14.11.1987

by ENCHEVA,MILKA A, DOBREVA,EKATERINA D, GAVRILOVA,MARIANA L, TRANDAFILOV, ARKADIJJ T
Year of Publication 15.12.1982

by TRANDAFILOV,ARKADIJJ T, DOBREVA,EKATERINA D, ENCHEVA,MILKA A, LIRKOV,ALEKSANDR L, PETROV,KHRISTO B, PINDEVA,LILIJA I
Year of Publication 14.11.1986

by ENCHEVA,MILKA A, DOBREVA,EKATERINA D, TRENDAFILOV,ARKADIJJ T, RADEV,SIMEON G, MINCHEV,VESELIN G, BOSEVSKI,VALENTIN M, KIREV,SIMEON I, KARADACHKI,IVAN S
Year of Publication 14.11.1986

by LIRKOV,ALEKSANDR L, ENCHEVA,MILKA A, DOBREVA,EKATERINA D, BOSHNAKOVA,RUMJANA N, PETROV,KHRISTO B, DINEV,PETR D, GANCHEVA,TAMARA S, GEORGIEVA,STEFKA D
Year of Publication 15.11.1985

by DOBREVA,EKATERINA D, ENCHEVA,MILKA A, TRENDAFILOV,ARKADIJJ T, LIRKOV,ALEKSANDR L, PETROV,KHRISTO B, PENEV,PENCHO G, PINDEVA,LILIJA I
Year of Publication 15.01.1985

by DOBREVA,EKATERINA D.,BG, ENCHEVA,MILKA A.,BG, CHAK'ROVA,PENKA I.,BG, TRENDAFILOVA,EKATERINA G.,BG, JANACHKOVA,IVANKA M.,BG
Year of Publication 16.01.1989

by DOBREVA,EKATERINA D.,BG, ENCHEVA,MILKA A.,BG, PINDEVA,LILIJA I.,BG, PETROV,KHRISTO B.,BG, JANACHKOVA,IVANKA M.,BG
Year of Publication 15.12.1988

by PANUMIS,VACLOVAS V.,SU, ZHELIS,KHUGO P.,SU, DOBREVA,EKATERINA D.,BG, ENCHEVA,MILKA A.,BG, SHLEGERENE,ELENA A.,SU, PETROV,KHRISTO B.,BG
Year of Publication 15.11.1988

by DOBREVA,EKATERINA D.,BG, KARADACHKI,IVAN S.,BG, GAVRILOVA,MARIANA L.,BG, BOSEVSKI,VALENTIN M.,BG, ENCHEVA,MILKA A.,BG, PETROV,KHRISTO B.,BG, KIREV,SIMEON I.,BG, RADEV,SIMEON G.,BG, LIRKOV,ALEKSAND'R L.,BG
Year of Publication 15.08.1988

by ENCHEVA,MILKA A, LIRKOV,ALEKSANDR L, PETROV,KHRISTO B
Year of Publication 12.12.1980

by ENCHEVA,MILKA A, TRENDAFILOV,ARKADIJJ T, MARCHEVSKA, MARGARITA I
Year of Publication 25.03.1980

by ENCHEVA,MILKA A, DOBREVA,EKATERINA D, PETROV,KHRISTO B
Year of Publication 12.10.1979

by TRENDAFILOV,ARKADIJJ T, ENCHEVA,MILKA A, DOBREVA,EKATERINA D, GAVRILOVA,MARIANA L
Year of Publication 15.11.1982

by TRANDAFILOV,ARKADIJJ T, ENCHEVA,MILKA A, GAVRILOVA,MARIANA L, PETROV, KHRISTO B
Year of Publication 15.10.1982