000 00517nam a2200193Ia 4500
005 20250619144803.0
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020 _c9
040 _aMAIN
041 _aEnglish
082 _a621
_bCUS
100 _aCusens, A.R. and Santathadaporn, Sakda
245 0 _aDesign charts for helical stairs
_b: with fixed supports
260 _aLondon
_b; Concrete Publications
_c, 1966
300 _a35p.
650 _aEngineering
650 _aMechanical Engineering
942 _cBK
999 _c112347
_d112347