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30. Letter: Reduction of the effects of scattered radiation. Inia P J Nucl Med; 1974 Apr; 15(4):316-7. PubMed ID: 4818308 [No Abstract] [Full Text] [Related]
31. Letter: The argument for minification. Sear R J Nucl Med; 1974 Mar; 15(3):219-20. PubMed ID: 4813238 [No Abstract] [Full Text] [Related]
32. Letter: Some considerations for the use of the pinhole collimator. Corey KR J Nucl Med; 1974 Feb; 15(2):146-7. PubMed ID: 4810589 [No Abstract] [Full Text] [Related]