Zoran Popovic, Mental-Spatial Definition of Axioms

Zoran Popovic, Mental-Spatial Definition of Axioms fragment 100 x 70 cm from 400 x 350 cm, Belgrade 1971/72. Drawing by graphite pen on millimeter-grid-paper / Zoran Popovic, Mentalno-prostorna definicija aksioma, detalj 100 x 70 cm od 400 x 350 cmm, Beograd, 1971-72. Crtez olovkom na milimetarskom papiru