Published in Gulf Research Reports, in 1973, in volume 4, issue 2, pages 151-165

Published in Gulf Research Reports, in 1973, in volume 4, issue 2, pages 166-168

Published in Gulf Research Reports, in 1973, in volume 4, issue 2, pages 169-173

Published in Gulf Research Reports, in 1973, in volume 4, issue 2, pages 174-185

Published in Gulf Research Reports, in 1973, in volume 4, issue 2, pages 186-190

Published in Gulf Research Reports, in 1973, in volume 4, issue 2, pages 191-204

Published in Gulf Research Reports, in 1973, in volume 4, issue 2, pages 205-213

Published in Gulf Research Reports, in 1973, in volume 4, issue 2, pages 214-232

Published in Gulf Research Reports, in 1973, in volume 4, issue 2, pages 233-263

Published in Gulf Research Reports, in 1973, in volume 4, issue 2, pages 264-271

Published in Gulf Research Reports, in 1973, in volume 4, issue 2, pages 272-277

Published in Gulf Research Reports, in 1973, in volume 4, issue 2, pages 278-299

Published in Gulf Research Reports, in 1973, in volume 4, issue 2, pages 300-317