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Scholars Portal
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Preserved
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2026-03-19
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Preserved : 30; 35 (1 to 4); 36 (1 to 4); 37 (1 to 4); 38 (1 to 4); 39 (1 to 4); 40 (1 to 4); 41 (1 to 4); 42 (1 to 4); 43 (1 to 4); 44 (1 to 4); 45 (1 to 4); 46 (1 to 4); 47 (1 to 4); 48 (1 to 4); 49 (1 to 4); 50 (1 to 4); 51 (1 to 4); 52 (1 to 4); 53 (1 to 4); 54 (1 to 4); 55 (1 to 4); 56 (1 to 4)
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Internet Archive
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Preserved
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2025-08-08
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24 to 37
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Technische Informationsbibliothek
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Preserved
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2026-01-13
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vol.30:1-4;vol.31:1-4;vol.32:1-4;vol.33:1-4;vol.34:1-4;vol.35:1-4;vol.36:1-4;vol.37:1-4;vol.38:1-4;vol.39:1-4;vol.40:1-4;vol.41:1-4;vol.42:1-4;vol.43:1-4;vol.44:1-4;vol.45:1-4;vol.46:1-4;vol.47:1-4;vol.48:1-4;vol.49:1-4;vol.50:1-4;vol.51:1-4
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CLOCKSS Archive
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Preserved
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2026-04-13
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30 to 57
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Portico
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Preserved
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2026-04-16
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Preserved : 2012: 43(1-4), 2013: 44(1-4), 2014: 45(1-4), 2015: 46(1-4), 2016: 47(1-4), 2017: 48(1-4), 2018: 49(1-4), 2019: 50(1-4), 2020: 51(1-4), 2021: 52(1-4), 2022: 53(1-4), 2023: 54(1-4), 2024: 55(1-4), 2025: 56(1-4)
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National Library of the Netherlands
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Preserved
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2024-12-15
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Preserved : 37 (1-4); 38 (2-4)
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