Archive of 1981 Online Issues:

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January
January; 63 (1): 1 - 174
February
February; 63 (2): 175 - 334
March
March; 63 (3): 335 - 510
April
April; 63 (4): 511 - 686
June
June; 63 (5): 687 - 862
July
July; 63 (6): 863 - 1038
September
September; 63 (7): 1039 - 1198
October
October; 63 (8): 1199 - 1358
December
December; 63 (9): 1359 - 1500