no. 1 - 23 June 1968

no. 5 - November 1968

no. 6 - December 1968

no. 7 - March 1969

no. 8 - May 1969

no. 9 - June 1969
(Also numbered vol. 2, no. 1)

no. 10 - August 1969.
(Also numbered vol. 2, no. 2)

no. 11 - September 1969
(Also numbered vol. 2, no. 3)

no. 12 - October 1969
(Also numbered vol. 2, no. 4)

no. 13 - November 1969
(Also numbered vol. 2, no. 5)

no. 14 - December 1969
(Also numbered vol. 2, no. 6)

no. 16 - March 1970
(Also numbered vol. 2, no. 8)

no. 17 - May 1970
( Also numbered vol. 2, no. 9)

no. 18 - June 1970
(Also numbered vol. 3, no. 1)

no. 19 - July 1970
( Also numbered vol. 3, no. 2)

no. 20 - August 1970
( Also numbered vol. 3, no. 3)

no. 21 - September 1970
( Also numbered vol. 3, no. 4)

no. 22 - November 1970
( Also numbered vol. 3, no. 5)

no. 23 - December 1970
( Also numbered vol. 3, no. 6)

no. 24 - April 1971
( Also numbered vol. 3, no. 8)

no. 25 - May 1971
( Also numbered vol. 3, no. 9)

no. 26 - June 1971
( Also numbered vol. 4, no. 1)

no. 27 - July 1971
( Also numbered vol. 4, no. 2)

no. 31 - January 1972
( Also numbered vol. 4, no. 6)