title: Ultraviolet refractive indices of aqueous solutions of urea and guanidine hydrochloride.
mesh_terms: D006146:Guanidines; D009905:Optical Rotatory Dispersion; D012996:Solutions; D013053:Spectrophotometry; D014466:Ultraviolet Rays; D014508:Urea; D014961:X-Ray Diffraction
chemical_list: D006146:Guanidines; D012996:Solutions; D014508:Urea