The book Anton Bruckner: A Discography by Lee T. Lovallo contains details for the Bruckner recordings which can be found by searching in the book for MAV-3609.
Bruckner Symphony No. 4 timing: 1:03:14 (18:41, 14:10, 10:00, 20:24)
Recorded circa 1977.
Conductor: Denis Zsoltay
South German Philharmonic
Google Books limited my view to this work.
The "South German Philharmonic" appears to be a translation of Süddeutsche Philharmonie which is an orchestra formed by Alfred Scholz and conducted by artists whose identity Sholz obscured.
The tracklist for this release is currently unknown.