Les 7 polycubes by David Umemoto March 25, 2016 archaic archaic_umemoto2 Les 7 polycubes byDavid Umemoto archaic_umemoto7 archaic_umemoto8 archaic_umemoto1 archaic_umemoto9 archaic_umemoto6 archaic_umemoto5 archaic_umemoto4 archaic_umemoto3 +