Operas -- United States -- 19th century. / http://id.loc.gov/authorities/subjects/sh85094914 http://id.loc.gov/authorities/names/n78095330 http://id.loc.gov/authorities/subjects/sh2002012475 : The Indian princess / John Bray. The Ethiop / Raynor Taylor.
Operating leases -- United States. / http://id.loc.gov/authorities/subjects/sh94005751 http://id.loc.gov/authorities/names/n78095330 : Independent leasing authorities : increasing oversight and reducing costs of space leased by Federal agencies : hearing before the Subcommittee on Economic Development, Public Buildings, and Emergency Management of the Committee on Transportation and Infrastructure, House of Representatives, One Hundred Fourteenth Congress, second session, July 6, 2016.
Operating leases -- United States -- Costs. / http://id.loc.gov/authorities/subjects/sh94005751 http://id.loc.gov/authorities/names/n78095330 http://id.loc.gov/authorities/subjects/sh99004947 : Department of Veterans Affairs leases : is the VA overpaying for leased medical facilities? : hearing before the Subcommittee on Economic Development, Public Buildings, and Emergency Management of the Committee on Transportation and Infrastructure, House of Representatives, One Hundred Fourteenth Congress, second session, September 28, 2016.
Operating room nursing -- Examinations, questions, etc. / http://id.loc.gov/authorities/subjects/sh85094975 http://id.loc.gov/authorities/subjects/sh99001543 : Medical-surgical nursing test success : an unfolding case study review / Karen K. Gittings, Rhonda M. Brogdon, Frances H. Cornelius.
Operating room nursing -- Handbooks, manuals, etc. / http://id.loc.gov/authorities/subjects/sh85094975 http://id.loc.gov/authorities/subjects/sh99001300 : Fast facts for the medical-surgical nurse : clinical orientation in a nutshell / Maggie Ciocco, MS, RN, BC.
Operating room personnel -- Health. / http://id.loc.gov/authorities/subjects/sh85094977 http://id.loc.gov/authorities/subjects/sh00006004 : Rückengerechtes Arbeiten im OP : Leitfaden für eine gesundheitsfördernde Arbeitsweise / Angelika Ammann, Tim Ammann.
Operating room technicians. / http://id.loc.gov/authorities/subjects/sh85094978 : Surgical technology for the surgical technologist : a positive care approach / Association of Surgical Technologists ; executive editors, Bob L. Caruthers, Paul Price ; editors, Teri L. Junge, Ben D. Price.
Operating rooms -- Safety measures. / http://id.loc.gov/authorities/subjects/sh85094979 http://id.loc.gov/authorities/subjects/sh00007912 : Review of patient safety in the operating room in Veterans Health Administration facilities.
Operating rooms -- Technological innovations. / http://id.loc.gov/authorities/subjects/sh85094979 http://id.loc.gov/authorities/subjects/sh2001009095 : Imaging and visualization in the modern operating room : a comprehensive guide for physicians / Fong Yuman, Pier Cristoforo Giulianotti, Jason Lewis, Bas Groot Koerkamp, Thomas Reiner, editors.
Operating rooms -- West Virginia -- Morgantown -- Noise. / http://id.loc.gov/authorities/subjects/sh85094979 http://id.loc.gov/authorities/names/n79063919 http://id.loc.gov/authorities/subjects/sh00006087 : Evaluation of potential noise exposures in hospital operating rooms / Lilia Chen, Scott E. Brueck.
Operating systems (Computers) -- Design. / http://id.loc.gov/authorities/subjects/sh85094982 http://id.loc.gov/authorities/subjects/sh2002006371 : Control-based operating system design / Alberto Leva, Martina Maggio, Allessandro Vittorio Papadopoulos and Federico Terraneo.
Operating systems (Computers) -- Drama. / http://id.loc.gov/authorities/subjects/sh85094982 http://id.loc.gov/authorities/subjects/sh99001612 : Her / Warner Bros. Pictures presents an Annapurna Pictures production ; produced by Megan Ellison, Spike Jonze, Vincent Landay ; written and directed by Spike Jonze.
Operating systems (Computers) -- Storage. / http://id.loc.gov/authorities/subjects/sh85094982 http://id.loc.gov/authorities/subjects/sh00008427 : IBM system storage N series clustered data ONTAP / Roland Tretau [and others].
Operation Allied Force, 1999 -- Law and legislation -- United States. / http://id.loc.gov/authorities/subjects/sh00005293 http://id.loc.gov/authorities/subjects/sh99004848 http://id.loc.gov/authorities/names/n78095330 : Description of present law and a proposal relating to tax relief for personnel in the Federal Republic of Yugoslavia (Serbia/Montenegro), Albania, the Adriatic Sea, and the northern Ionian Sea : scheduled for markup by the House Committee on Ways and Means on April 13, 1999 / prepared by the Joint Committee on Taxation.