Columbia subject headings:
Holography--Equipment and supplies--Congresses.
Optical wave guides--Materials--Congresses.
Photochemistry--Congresses.
Photopolymers--Congresses.
Harvard subject headings:
Princeton subject headings:
Holography--Congresses.
Lasers in chemistry--Congresses.
Lasers in physics--Congresses.
Photopolymers--Congresses.
Wave guides--Congresses.