00413nam a2200193Ia 4500008004100000082001000041082000800051100001800059245003600077250001200113260002100125260000900146300000900155365000900164365001100173365000600184365000600190650002300196181031s9999    xx            000 0 und d  a692.2  bSPE  aSpens Michael  aStaircases: detail in building.  a6th ed.  bAcademy Editions  c1995  a64p.  b1230  cRupees  d0  e0  aBuilding Materials