The reference appears to be a specific issue of a publication or a listed item in a legal or historical archive from 1990.

In these records, is listed as a publication by Peter Theander , a name associated with adult magazine distribution in that era. The "deep piece" likely refers to a specific editorial feature or visual segment within that issue. PERTH, TUESDAY 13 FEBRUARY 1990 No 13 SPECIAL

While there was a notable feminist film study book titled Hard Core: Power, Pleasure, and the "Frenzy of the Visible" published by Linda Williams in 1989, the specific designation "Number 39 November 1989" is found in Official Government Gazettes from the early 1990s.