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Are you Sheldon Judson, author of the books below?
Physical Geology by Sheldon Judson The Lab Book by Sheldon Judson Earth by Sheldon Judson Geology of the San Jon site, eastern New Mexico (with 5 plates) by Sheldon Judson The Hodges site by Sheldon Judson Physical Geology by Sheldon Judson Physical Geology by Sheldon Judson Physical Geology by Sheldon Judson Radioactivity in ground and surface water by Sheldon Judson Laboratory manual for Physical geology by Sheldon Judson


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