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Archive of 1977 Online Issues:

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January 1977; 19 (1): 1 - 125
 March 1977; 19 (2): 127 - 251
April 1977; 19 (3): 253 - 376
 June 1977; 19 (4): 377 - 482
August 1977; 20 (1): 1 - 141
 September 1977; 20 (2): 143 - 268
November 1977; 20 (3): 269 - 391
 December 1977; 20 (4): 393 - 518