<list name="author">
<term><name>Jack Collins</name><frequency>2</frequency></term>
<term><name>Englund, Carl R.</name><frequency>1</frequency></term>
<list name="author">
<term><name>Jack Collins</name><frequency>2</frequency></term>
<term><name>Englund, Carl R.</name><frequency>1</frequency></term>
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<term><name>Cartography</name><frequency>1</frequency></term>
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<term><name>Computers</name><frequency>1</frequency></term>
<term><name>Imaging Systems In Medicine</name><frequency>1</frequency></term>
<term><name>Optical Pattern Recognition</name><frequency>1</frequency></term>
<term><name>Radioisotope Scanning</name><frequency>1</frequency></term>
<term><name>Railroads</name><frequency>1</frequency></term>
<term><name>Scintillation Cameras</name><frequency>1</frequency></term>
<term><name>Tomography</name><frequency>1</frequency></term>
<term><name>Universities And Colleges</name><frequency>1</frequency></term>
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<term><name>Radioisotope Scanning</name><frequency>1</frequency></term>
<term><name>Railroads</name><frequency>1</frequency></term>
<term><name>Scintillation Cameras</name><frequency>1</frequency></term>
<term><name>Tomography</name><frequency>1</frequency></term>
<term><name>Universities And Colleges</name><frequency>1</frequency></term>
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