PT - JOURNAL ARTICLE AU - PDA TI - PDA Comments: USP on Microbiological Evaluation of Clean Rooms and Other Controlled Environments <1116> DP - 1997 Nov 01 TA - PDA Journal of Pharmaceutical Science and Technology PG - 222--226 VI - 51 IP - 6 4099 - http://journal.pda.org/content/51/6/222.short 4100 - http://journal.pda.org/content/51/6/222.full SO - PDA J Pharm Sci Technol1997 Nov 01; 51