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Kompleksnijat podchod v upravlenieto na kačestvoto : lekcija
Kechajov, Anastas, (1985)
An integrated quality management approach for dairy products for selected regions in Bulgaria and Hungary
Adler, Jens, (1997)
Evolution and implementation of quality management practices in the manufacturing sector in Eastern Europe after the end of communism : the case of Bulgaria
Georgiev, Svetoslav, (2016)