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OPR may refer to: * Office of Population Research, the oldest population research center in the United States * Office of Professional Responsibility, part of the United States Department of Justice responsible for investigating attorneys employed therein who have been accused of misconduct or crimes in their professional functions * Office of Public Roads, a predecessor of the United States Federal Highway Administration * Official Pattern Release, used by Trend Micro to refer to the definitions for their antivirus products * Oregon Pacific Railroad (1880–94), in Oregon, United States * Oregon Pacific Railroad (1997), in Oregon, United States * Old Parochial Registers of the Church of Scotland * Operator (disambiguation) * Output Recordings, a British independent record label run by Trevor Jackson, between 1996–2006 * Outward Processing Relief, an EU custom duty regulation that provides duty relief on imports of goods from third countries which have been produced from previously exported EU goods. * Overall pressure ratio, the ratio of the stagnation pressure as measured at the front and rear of the compressor of a gas turbine engine * Overnight Policy Rate, an overnight interest rate set by Bank Negara Malaysia used for monetary policy direction * Rodrigues People's Organisation (''Organisation du Peuple Rodriguais''), a Mauritian political party 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「OPR」の詳細全文を読む スポンサード リンク
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