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"The abolishment of pain in surgery is a chimera. It is absurd to go on seeking it...knife and pain are two words in surgery that must forever be associated in the consciousness of the patient."
Dr. Alfred Velpeau, French surgeon ; 1839
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| Number | Title | Issue Date |
| 4025872 | Negative resistance network A network characterized at a reference terminal pair by a negative resistance at a frequency near nfo, where n is an integer greater than one. The network comprises a circuit element characterized by a negative resistance at frequencies in the ... | 05/24/1977 |
