TY - JOUR T1 - LETTERS TO THE EDITOR JF - PDA Journal of Pharmaceutical Science and Technology JO - PDA J Pharm Sci Technol SP - 50 LP - 51 VL - 47 IS - 2 AU - Letters Y1 - 1993/03/01 UR - http://journal.pda.org/content/47/2/50.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -