1. Bacteriologic Status of Periapical Tissue in 150 Cases of Infected Pulpless Teeth;Grossman;J. D. Res,1959
2. An Investigation Into Residual Periapical Infection After Pulp Canal Therapy;Hedman;Oral Surg., Oral Med. & Oral Path,1951
3. Preliminary Sterilization of the Endodontic Field;Melville;Brit. D. J,1961
4. Preliminary Sterilization of the Endodontic Field; Comparison of Antiseptics;Birch;Brit. D. J,1961
5. A Comparison of Root-Canal and Apical Lesion Flora; Problems of Direct Bacteriological Sampling of the Periapical Lesion;Birch;Brit. D. J,1964