found: nuc85-76658: Ponnamperuma, C. Search for amino acids in Apollo returned lunar soil, 1974 (hdg. on MoU rept.: Gehrke, Charles W.; usage: Charles W. Gehrke)
found: LC data base, 1/22/86 (hdg.: Gehrke, Charles W.; usage: Charles W. Gehrke)
found: Amino acid analysis ... 1987: CIP t.p. (Charles W. Gehrke) data sheet (b. 7/18/17)
found: Chromatography and modification of nucleosides, 1989- : pt. C., CIP t.p. (Charles W. Gehrke; Dept. of Biochem., Univ. of Missouri-Columbia, and Cancer Research Ctr., Columbia, Mo.) CIP Galley (Charles William Gehrke; b. 7/18/17)
found: Chromatography, c2010: t.p. (Charles W. Gehrke) p. 4 of cover (1917-2009)