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- [4] A NEW METHOD FOR ISOLATING ISODEXTROPIMARIC ACID FROM PINE OLEORESIN AND ROSIN JOURNAL OF ORGANIC CHEMISTRY, 1958, 23 (01): : 25 - 26
- [5] AN IMPROVED PROCEDURE FOR THE ISOLATION OF NEOABIETIC ACID FROM PINE OLEORESIN AND ROSIN JOURNAL OF ORGANIC CHEMISTRY, 1956, 21 (06): : 610 - 611