GOST 7427-1976
Geometrical optics. Terms, definitions and letter symbols
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GOST 7427-1976
Standard No.
GOST 7427-1976
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GOSTR
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GOST 7427-1976
GOST 7427-1976 history
1970
GOST 7427-1976
Geometrical optics. Terms, definitions and letter symbols
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