1. Oral pathology;Thoma,1954
2. Oral precancerous lesions;Hertz;Oral Surg., Oral Med. & Oral Path.,1956
3. The avitaminoses;Eddy,1944
4. Tissue changes in vitamin deficiencies;Wolbach;Physiol. Rev.,1942
5. Leukoplakia;Ward;Ca a Bulletin of Cancer Progress,1953