Vol. 19 No. 1 January
Vol. 19 No. 2 February-March
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Vol. 19 No. 4 May
Vol. 19 No. 5 June
Vol. 19 No. 6 July
Vol. 19 No. 7 August-September
Vol. 19 No. 8 October
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Vol. 20 No. 10 December
Vol. 20 No. 1 January
Vol. 20 No. 2 February-March
Vol. 20 No. 3 April
Vol. 20 No. 4 May
Vol. 20 No. 5 June-July
Vol. 20 No. 6 July
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Vol. 20 No. 9 November
Vol. 20 No. 10 December40th Anniversary Issue