TY JOUR TI The definitions of the life cycle of a testing laboratory KW Life cycle KW testing laboratory KW stages and models of the life cycle of testing laboratory KW level of maturity of a testing laboratory KW accreditation KW criteria KW definitions JO Product quality control AU Shkarina, T.Y. AU Boltrina, A.A. PY 2019 IS 2020 PB Advertising and Information Agency "Standards and quality»