PT - JOURNAL ARTICLE AU - Nash, R. A. TI - LETTER TO THE EDITOR DP - 1993 Jul 01 TA - PDA Journal of Pharmaceutical Science and Technology PG - 150--151 VI - 47 IP - 4 4099 - http://journal.pda.org/content/47/4/150.short 4100 - http://journal.pda.org/content/47/4/150.full SO - PDA J Pharm Sci Technol1993 Jul 01; 47