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Publisher
- az buki national publishing house17
- prof. dr. assen zlatarov university6
- institute for knowledge management5
- meditsina i fizkultura3
- institute of philosophical research2
- scientific works of the agricultural university, plovdiv2
- bulgarian academy of sciences, institute for historical studies1
- bulgarian academy of sciences, institute of ethnology & folklore studies with ethnographic museum1
- izdaca natsionalniiat tsentur po khigiena, meditsinska ekologiia i khranene1