RT Journal Article SR Electronic T1 Improved Determination of Organic Volatile Impurities in Pharmaceutical Materials by 〈USP-467〉 Using Automated Static Headspace GC/MS JF PDA Journal of Pharmaceutical Science and Technology JO PDA J Pharm Sci Technol FD Parenteral Drug Association (PDA) SP 129 OP 136 VO 53 IS 3 A1 Mcclure, Gregory L. YR 1999 UL http://journal.pda.org/content/53/3/129.abstract AB