The artists, mix/version and companies are not mentioned on the center labels.
A [similar version](https://www.discogs.com/Human-Resource-Rave-O-Lution-Rough-Mix/release/2037183) exists with the same runout etchings and these details printed on the center labels.
Matrix / Runout
Etched runout side A2 BF 6720035 R - A₁
Etched runout side B2 BF 6720035 R - B₁
Rights societyBIEM STEMRA
℗ 1992 2B Free Records Digr Archive · rave-o-lution-1jcca4i