PT - JOURNAL ARTICLE AU - Schmitz, Andrew J. TI - Voluntary Standards—The USP and the PDA DP - 1980 Nov 01 TA - PDA Journal of Pharmaceutical Science and Technology PG - 425--426 VI - 34 IP - 6 4099 - http://journal.pda.org/content/34/6/425.short 4100 - http://journal.pda.org/content/34/6/425.full SO - PDA J Pharm Sci Technol1980 Nov 01; 34