TY - BOOK ED - United States ; Pharmacopeial Convention TI - USP 42, 2019 : The United States Pharmacopeia : the national formulary (V4) SN - 01957996 (Set) U1 - 615.11 PY - 2018/// CY - Rockville PB - The United States Pharmacopeial Convention KW - Pharmacopoeias KW - Medicine KW - United States ER -