The best I have seen to date is Pharmacokinetics : Processes and Mathematics by Peter G. Welling. -- Greg Blumenthal (blument1 at niehs.nih.gov) TEL: 919-541-7791, FAX: 919-541-3687 MD E1-05, NIEHS, P.O.Box 12233, RTP, NC 27709-2233 USA