Issues for <Oct. 1973>-<January/February 1977> lack volume numbering but constitute vol. I.
Issues for <July/August 1977>-<July 1979> called <vol. [II], no. 4>-<volume V, no.1>.
Issue for July/August 1977 called vol. III, no. 4, but constitutes vol. II, no. 4.
Issue for November/December 1977 called vol. III, no. 6, but constitutes vol. II, no. 6.
Vol. III omitted in numbering.