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SP 491.1325800.2020
Aerodromes. Rules of inspection of the technical condition
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€19
SP 143.13330.2012
Rooms for leisure and sports and improving activity of low-mobile groups of the population. Design rules. With Amendment No. 1
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€23
SP 11-105-97 Part I
Geological engineering surveys for construction. Part I. General rules for execution of works
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€25