Published in The Wilson Bulletin, in 1969, in volume 81, issue 1, pages 44-54

Published in The Wilson Bulletin, in 1969, in volume 81, issue 1, pages 55-68

Published in The Wilson Bulletin, in 1969, in volume 81, issue 1, pages 69-74

Published in The Wilson Bulletin, in 1969, in volume 81, issue 1, pages 75-78

Published in The Wilson Bulletin, in 1969, in volume 81, issue 1, pages 79-86

Published in The Wilson Bulletin, in 1969, in volume 81, issue 1, pages 87-93

Published in The Wilson Bulletin, in 1969, in volume 81, issue 1, pages 94

Published in The Wilson Bulletin, in 1969, in volume 81, issue 1, pages 109

Published in The Wilson Bulletin, in 1969, in volume 81, issue 1, pages 110-111

Published in The Wilson Bulletin, in 1969, in volume 81, issue 1, pages 119-120

Published in The Wilson Bulletin, in 1969, in volume 81, issue 2, pages 123-139

Published in The Wilson Bulletin, in 1969, in volume 81, issue 2, pages 140-154

Published in The Wilson Bulletin, in 1969, in volume 81, issue 2, pages 155-162

Published in The Wilson Bulletin, in 1969, in volume 81, issue 2, pages 163-168

Published in The Wilson Bulletin, in 1969, in volume 81, issue 2, pages 169-183

Published in The Wilson Bulletin, in 1969, in volume 81, issue 2, pages 184-195

Published in The Wilson Bulletin, in 1969, in volume 81, issue 2, pages 195

Published in The Wilson Bulletin, in 1969, in volume 81, issue 2, pages 196-206

Published in The Wilson Bulletin, in 1969, in volume 81, issue 2, pages 224

Published in The Wilson Bulletin, in 1969, in volume 81, issue 2, pages 225-230

Published in The Wilson Bulletin, in 1969, in volume 81, issue 2, pages 232

Published in The Wilson Bulletin, in 1969, in volume 81, issue 3, pages 235-245

Published in The Wilson Bulletin, in 1969, in volume 81, issue 3, pages 246-257

Published in The Wilson Bulletin, in 1969, in volume 81, issue 3, pages 258-263

Published in The Wilson Bulletin, in 1969, in volume 81, issue 3, pages 264-269

Published in The Wilson Bulletin, in 1969, in volume 81, issue 3, pages 270-279

Published in The Wilson Bulletin, in 1969, in volume 81, issue 3, pages 280-292

Published in The Wilson Bulletin, in 1969, in volume 81, issue 3, pages 293-329

Published in The Wilson Bulletin, in 1969, in volume 81, issue 3, pages 342

Published in The Wilson Bulletin, in 1969, in volume 81, issue 3, pages 343

Published in The Wilson Bulletin, in 1969, in volume 81, issue 3, pages 352

Published in The Wilson Bulletin, in 1969, in volume 81, issue 3, pages 353-360

Published in The Wilson Bulletin, in 1969, in volume 81, issue 4, pages 363-395

Published in The Wilson Bulletin, in 1969, in volume 81, issue 4, pages 396-406

Published in The Wilson Bulletin, in 1969, in volume 81, issue 4, pages 407-418

Published in The Wilson Bulletin, in 1969, in volume 81, issue 4, pages 419-440

Published in The Wilson Bulletin, in 1969, in volume 81, issue 4, pages 441-449

Published in The Wilson Bulletin, in 1969, in volume 81, issue 4, pages 450-453

Published in The Wilson Bulletin, in 1969, in volume 81, issue 4, pages 454-459

Published in The Wilson Bulletin, in 1969, in volume 81, issue 4, pages 473-474

Published in The Wilson Bulletin, in 1969, in volume 81, issue 4, pages 481-482