The penrose annual volume 1969 /
- London : Lund Humphries & co., c1969.
- v. illus., plates, facsims., diagrs. 25-29 cm.
47034609
Photomechanical processes
TR925 / .P4
655.058 / PEN
47034609
Photomechanical processes
TR925 / .P4
655.058 / PEN
