1. Pathology;Robbins,1967
2. Principles of Pathology;Hopps,1964
3. Differential Diagnosis of Odontalgia;Mitchell,1960
4. Pathology of the Periapical Area;Shafer,1960
5. Periapical Lesions Associated With Endodontically Treated Teeth;Patterson;J. Am. Dent. Assoc,1964