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Subjects: *SOLVENTS; *ORGANIC solvents; *NONAQUEOUS solvents
Subjects: *TANNINS; *ORGANIC solvents; *ORGANIC compounds
Subjects: NITROSO compounds; INDOLE compounds; ORGANIC chemistry
Subjects: *ORGANIC solvents; *ORGANIC compounds; *NONAQUEOUS solvents
Subjects: ORGANIC solvents; LIGNINS; SULFATE pulping process
Subjects: *Organic solvents; *Organic compounds; *Air pollutionMexico City (Mexico)
Subjects: ORGANIC solvents; NONAQUEOUS solvents; ORGANIC compounds
Subjects: ORGANIC solvents; ORGANIC compounds; NMR spectrometers