Influence of UV-C radiation on the microbiological purity in selected species of herbs - Marta Jolanta Kozak-Kalita; Paweł Sobczak; Kazimierz Zawiślak; Jacek Mazur; Marian Panasiewicz; Wioletta Agnieszka Żukiewicz-Sobczak (Health Problems of Civilization, 2018)