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OECD 1,878
Organisation for Economic Co-operation and Development 1,113
Open Content Alliance 593
Organization, World Health 342
Ovid, 43 B.C.-17 or 18 A.D. 197
Owen 171
Ovid, 43 B.C.-17 A.D. or 18 A.D. 162
Open Society Foundations 155
Ormonde, James Butler, Duke of, 1610-1688 144
Owen, John, 1616-1683 140
Office, International Labour 112
Omohundro Institute of Early American History & Culture 112
Olivia S Mitchell 104
OCDE, OECD / 103
Organisation for Economic Co-operation and Development. Secretary-General 97
Olson, Steve 92
OECD Nuclear Energy Agency 83
Oates, Joyce Carol, 1938- 79
O'Hanlon, Michael E. 77
O'Neill, Eugene, 1888-1953 72
Ortega y Gasset, José, 1883-1955 72
Ogilby, John, 1600-1676 71
O'Connor, Maeve 69
Origen 66
Organisation for Economic Co-operation and Development. Development Centre 65
Osgoode Society for Canadian Legal History 65
Open University 64
Organization, Pan American Health 64
Ogden, Samuel 63
Ormonde 63
Oliver Greene 62
Opus Arte (Firm) 62
Oates, Titus, 1649-1705 61
Oxford University Press 61
Olson, Steve, 1956- 60
OECD Publishing 54
Overton, Richard, fl. 1646 50
Oleszek 49
Otway, Thomas, 1652-1685 49
O'Grady, Lorraine 48
O'Sullivan 48
Omar Khayyam 47
O'Gorman, James F. 46
Offenbach, Jacques, 1819-1880 43
Oldham, John, 1653-1683 41
Orrery, Roger Boyle, Earl of, 1621-1679 41
O'Conor, Norreys Jephson, 1885-1958 40
Ockeghem, Johannes, approximately 1410-1497 39
Oriole Press (Berkeley Heights, N.J.) 39
Odling-Smee, J. C. 37
Orwell, George, 1903-1950 35
Otter, Anne Sofie von 35
OverDrive, Inc 35
O'Keeffe, Georgia, 1887-1986 34
ODI 34
Organization of American States 34
Ozawa, Seiji, 1935- 34
Oliphant, Mrs. 1828-1897 33
Olson, Charles, 1910-1970 33
Oughtred, William, 1575-1660 33
O'Collins, Gerald 32
O'Donohue, William T. 32
Office, International Labor 32
Oliker, Olga 32
Oliveros, Pauline, 1932-2016 32
Okihiro, Gary Y., 1945- 31
Organization, World Intellectual Property 31
Osgood, Wilfred Hudson, 1875-1947 31
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O'Bryant 30
O'Casey, Sean, 1880-1964 30
Oesterley, W. O. E. 1866-1950 30
Olivier J Blanchard 30
Organisation for Economic Co-operation and Development, 30
Ostrom, Elinor 30
Ottaway, Marina 30
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Oliver, Kelly, 1958- 29
Orion, Assaf 29
Ornstein, Norman J. 29
Ostriker, Alicia 29
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Orley Ashenfelter 25
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