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Ropper,Allan H, Samuels, Martin A.. (2010). Samuels's manual of neurologic therapeutics (8th.Ed.). Philadelphia: Lippincott.

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Ropper,Allan H, Samuels, Martin A.. Samuels's manual of neurologic therapeutics. 8th.Ed. Philadelphia: Lippincott, 2010. Text.

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Ropper,Allan H, Samuels, Martin A.. Samuels's manual of neurologic therapeutics. 8th.Ed. Philadelphia: Lippincott, 2010. Text.

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Ropper,Allan H, Samuels, Martin A.. Samuels's manual of neurologic therapeutics. 8th.Ed. Philadelphia: Lippincott, 2010. Print.