Culberson, CF 1974: Conditions for the use of Merck silica gel 60 F-254 plates in the standardized thin-layer chromatographic technique for lichen products. - Jour. Chromatogr.97: 107-108. [RLL List # 90 / Rec.# 3780] Keywords: THIN LAYER CHROMATOGRAPHY / TECHNIQUES/ TLC / CHEMISTRY