= Example of Dr. Czesław MORA's scientific paper =
It's an article "The lith Process. The problem of the Light-sensitive material quality and its measurement".
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Photography in Philately
A Krzysztof K. Słowiński Collection
= Example of Dr. Czesław MORA's scientific paper =
It's an article "The lith Process. The problem of the Light-sensitive material quality and its measurement".