Aktivnostta na otrazhenieto : filosofsko i estestveno-nauchno obosnovanie : [monografii︠a︡] /
Main Author: | |
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Format: | Book |
Language: | Bulgarian |
Published: |
Sofii︠a︡ :
Nauka i izkustvo
1977
|
Subjects: |
Main Author: | |
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Format: | Book |
Language: | Bulgarian |
Published: |
Sofii︠a︡ :
Nauka i izkustvo
1977
|
Subjects: |