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2140-81


. , ,
2140-81 - . . , , (Visible defects, of wood. Classification, terms and definitions, methods of measurement)
: 27.10.2010
: 01.01.1982

, , .
, .
,
: 2140-71
:1 01.07.1983 (. 19.01.1983)
2 01.08.1990 (. 28.03.1990)



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