Articles by Author

Galin Petrov

"St. Cyril and St. Methodius" University of Veliko Tarnovo
Veliko Tarnovo, Bulgaria

2 articles by this author

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Research Article

30-11-2023

Unique: 947 | Total: 1387

79-88

Research Article

03-04-2019

Unique: 752 | Total: 1088

30-34

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