Písma sveta
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- Author: Viktor Krupa, Jozef Genzor
- Language: Slovak
- Author: Ioan-Iovitz Popescu, Gabriel Altmann, Peter Grzybek, Bijapur Dayaloo Jayaram, Reinhard Köhler, Viktor Krupa, Ján Macutek, Regina Pustet, Ludmila Uhlirova, Matummal N. Vidya
- Language: English
- Year: 2009
- Author: Viktor Krupa
- Language: English
- Year: 1973