found: Symposium Bioverfügbarkeit von Arzneimitteln, Essen, 1978.Bioverfügbarkeit von Arzneimitteln, 1979 (a.e.) t.p. (N. Rietbrock) verso t.p. (Prof. Dr. Norbert Rietbrock, Abt. f. Klinische Pharmak., Univ. Frankfurt)
found: Theophylline and other methylxanthines, 1982:t.p. (Norbert Rietbrock)
found: LC data base, 7/16/86(hdg.: Rietbrock, N.)
found: NLM files, 7/16/86(hdg.: Rietbrock, Norbert)
found: His Handbook of renal-independent cardiac glycosides, 1989:CIP t.p. (N. Rietbrock, Dept. of Clinical Pharm., Univ. Clinic, Frankfurt, FRG) pub. info. (Norman Rietbrock)