NBN 476-1960
Hollow bricks made of roasted earth for general masonry work
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NBN 476-1960
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NBN 476-1960
Release Date
1960
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BE-NBN
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NBN 476-1960
NBN 476-1960 history
1960
NBN 476-1960
Hollow bricks made of roasted earth for general masonry work
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