Physical chemistry of lignin

Title from folder label.Project report form no. 1. dated August 28, 1959. The physical chemistry of lignin preparation / John D. Scribner -- Project report form no. 2. dated April 20, 1964. The physical chemistry of lignin preparations: extraction of lignin from black spruce wood meal. Edward J. Jones -- Project report form no. 3. dated August 29, 1960. Isolation of black spruce lignin by gamma irradiation / John D. Scribner -- Project report form no. 4. dated July 2, 1964. Gamma irradiated wood meal lignin / Edward J. Jones -- Project report form no. 5. dated November 4, 1965. Physical chemistry of lignin preparation: preparation of extracted wood meal / S. C. Nagel -- Project report form no. 6. dated August 5, 1968. The physical chemistry lignin preparation / C. Y. Chu