Volumes 59 (5/6page)

• 

  1986, Volume 19
  70 paper

• 

  1985, Volume 18
  72 paper

• 

  1984, Volume 17
  65 paper

• 

  1983, Volume 16
  53 paper

• 

  1982, Volume 15
  43 paper

• 

  1981, Volume 14
  37 paper

• 

  1980, Volume 13
  25 paper

• 

  1979, Volume 12
  40 paper

• 

  1978, Volume 11
  30 paper

• 

  1977, Volume 10
  32 paper