Zobrazeno 1 - 1
of 1
pro vyhledávání: '"Purnama Nyoman"'
Autor:
Purnama Nyoman, Putu Kusuma Negara
Publikováno v:
Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi), Vol 5, Iss 3, Pp 576-583 (2021)
Masks are an important part of preventing Covid19 disease.The World Health Organization (WHO) have also recommended the community use masks when doing activities in public areas. There are many types of masks that are used to cover the nose and mouth
Externí odkaz:
https://doaj.org/article/eded44cc321e44feba9a34765baa070a
