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subjects CINEMATOGRAPHY
DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
FREQUENCY-CHANGING
HOLOGRAPHY
MAGNETOGRAPHY
MEASUREMENT OF NUCLEAR OR X-RADIATION
MEASURING
NON-LINEAR OPTICS
OPTICAL ANALOGUE/DIGITAL CONVERTERS
OPTICAL LOGIC ELEMENTS
OPTICS
PHOTOGRAPHY
PHYSICS
TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
TESTING
title VISUALISATION DE RADIOGRAMMES A L'AIDE DE CRISTAUX LIQUIDES
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