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Portico
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Preserved
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2026-06-18
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Preserved : 2016/2017: 15(1-4), 2017: 16(1-4), 2018: 17(1-4), 2019: 18(1-4), 2020: 19(1-4), 2021: 20(1-4), 2022: 21(1-4), 2023: 22(1-4), 2024: 23(1-3)
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Public Knowledge Project PLN
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Preserved
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2026-06-18
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Preserved : (AOP); 9 (1/2(30/31), 3/4(32/33)); 10 (1(34), 2(35), 3(36), 4(37)); 11 (1(38), 2(39), 3(40), 4(41)); 12 (1(42), 2(43), 3(44), 4(45)); 13 (1(46), 2(47), 3(48), 4(49)); 14 (1(50), 2(51), 3(52), 4(53)); 15 (1(54), 2(55), 3(56), 4(57)); 16 (1(58), 2(59), 3(60), 4(61)); 17 (1(62), 2(63), 3(64), 4(65)); 18 (1(66), 2(67), 3(68), 4(69)); 19 (1(70), 2(71), 3(72), 4(73)); 20 (1(74), 2(75), 3(76), 4(77)); 21 (1(78), 2(79), 3(80), 4(81)); 22 (1(82), 2(83), 3(84), 4(85)); 23 (1(86), 2(87), 3(88), 4(89)); 24 (1(90), 2(91), 3(92), 4(93)); 25 (1(94))
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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 15 (2); 16 (3); 20 (1 to 4); 21 (1 to 4); 22 (1 to 4); 23 (1 to 3)
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Library of Congress
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Preserved
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2025-04-07
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15 (1 to 4); 16 (1 to 4); 17 (1 to 4); 18 (1 to 4); 20 (1, 2, 4); 21 (1 to 4); 22 (1 to 4); 23 (1, 2)
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