Columbia subject headings:
Gums and resins--Analysis.
Gums and resins--Spectra.
Plastics--Additives--Analysis.
Plastics--Additives--Spectra.
Polymers--Analysis.
Polymers--Spectra.
Harvard subject headings:
Princeton subject headings:
Gums and resins--Analysis.
Gums and resins--Spectra.
Plastics--Additives--Analysis.
Plastics--Additives--Spectra.
Polymers--Analysis.
Polymers--Spectra.