NBN 539-1963
Precast floor slabs made of roasted earth or concrete
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NBN 539-1963
Standard No.
NBN 539-1963
Release Date
1964
Published By
BE-NBN
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NBN 539-1963
NBN 539-1963 history
1964
NBN 539-1963
Precast floor slabs made of roasted earth or concrete
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