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Differential Diagnosis in Primary Care by R. Douglas Collins Algorithmic Diagnosis of Symptoms and Signs by R. Douglas Collins Dynamic Differential Diagnosis by R. Douglas Collins Algorithmic Approach to Treatment by R. Douglas Collins Illustrated manual of neurologic diagnosis by R. Douglas Collins Illustrated diagnosis of localized diseases by R. Douglas Collins Algorithmic Selection and Interpretation of Diagnostic Tests by R. Douglas Collins What every patient should know about his health and his doctor; by R. Douglas Collins Illustrated diagnosis of systemic diseases by R. Douglas Collins Illustrated Manual of Fluid and Electrolyte Disorders by R. Douglas Collins


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