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14. Dental roentgenography: an investigation in adumbration, or the factors that control geometric unsharpness. FITZGERALD GM J Am Dent Assoc; 1947 Jan; 34(1):1-20. PubMed ID: 20277292 [No Abstract] [Full Text] [Related]
15. Dental roentgenography; vertical angulation, film placement and increased object-film distance. FITZGERALD GM J Am Dent Assoc; 1947 Feb; 34(3):160-70. PubMed ID: 20282517 [No Abstract] [Full Text] [Related]
16. Radiation dose reduction by higher voltage dental roentgenography. ETTER LE J Am Dent Assoc; 1956 Sep; 53(3):305-9. PubMed ID: 13357245 [No Abstract] [Full Text] [Related]