@book{6184,
	author = {United States Pharmacopeial Convention Inc},
	title = {United States pharmacopeia (USP) xxiI NF xvii supplement 1, 1990},
	publisher = {United State Pharmacopeial Convention Incorporation},
	year = {1989},
	address = {Rockville},
	edition = {17th},
	note = {2339 / 90 - 91 / 01.01.1991}
}