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- [7] SPECTROPHOTOMETRIC ESTIMATION OF CINNAMIC AND BENZOIC-ACIDS IN BALSAM TOLU AND BENZOIN JOURNAL OF THE ASSOCIATION OF OFFICIAL ANALYTICAL CHEMISTS, 1980, 63 (06): : 1195 - 1199
- [8] 3-OXO-6BETA-HYDROXYOLEAN-12-EN-28-OIC ACID, A NEW TRITERPENOID FROM COMMERCIAL TOLU BALSAM ACTA CHEMICA SCANDINAVICA, 1971, 25 (01): : 70 - &
- [9] RAPID SPECTROPHOTOMETRIC METHOD FOR DETERMINATION OF BENZOIC AND CINNAMIC-ACIDS IN BALSAM TOLU JOURNAL OF THE ASSOCIATION OF OFFICIAL ANALYTICAL CHEMISTS, 1979, 62 (01): : 82 - 84