RT Journal Article SR Electronic T1 Introduction to the PQRI Blend Uniformity Working Group Manuscripts JF PDA Journal of Pharmaceutical Science and Technology JO PDA J Pharm Sci Technol FD Parenteral Drug Association (PDA) SP 59 OP 63 VO 57 IS 2 A1 Tobias Massa YR 2003 UL http://journal.pda.org/content/57/2/59.abstract AB