PT - JOURNAL ARTICLE AU - Levchuk, John W. TI - Good Validation Practices: FDA Issues DP - 1994 Sep 01 TA - PDA Journal of Pharmaceutical Science and Technology PG - 221--223 VI - 48 IP - 5 4099 - http://journal.pda.org/content/48/5/221.short 4100 - http://journal.pda.org/content/48/5/221.full SO - PDA J Pharm Sci Technol1994 Sep 01; 48