61
“...Bălgarska akademija na naukite...”
62
“...Bălgarska akademija na naukite...”
64
Published: [1998]-
65
Published: 1972
Superior document: Sto godini Bălgarska Akademija na Naukite 1869 - 1969 3
66
Published: 1965
67
Published: 2018
68
Published: 1975
69
Published: 1963
70
Published: 1988
Links: Inhaltsverzeichnis
71
Published: 1974
72
Published: 1959
73
“...Bălgarska akademija na naukite Naučen archiv...”
74
Published: 1989
75
Published: 1959-1973
76
Published: 2005
Superior document: Fizikata v Bălgarija 1889-1960 ; nauka, obrazovanie, prosveta ; bibliografija 1
77
78
Published: 1889-
79
Published: 1965-
80
Published: 1995