Chemicals Toxicology -- See Toxicology --subdivision Toxicology under individual chemicals and other substances for works on their poisonous effect on human beings or animals, e.g. Copper--Toxicology
Chemistry Analytic Qualitative -- See also the narrower term Spectrum analysis --subdivision Spectra under individual chemicals, materials, elementary particles, and celestial bodies, e.g. Copper--Spectra; Metals--Spectra; Protons--Spectra; Stars--Spectra