000 003000000a22001330004500
245 _aConcrete shell roofs
100 _aWilby, C.B.
100 _aKhwaja, I.
260 _aLondon
_bApplied Science Publishers
_c1977
300 _a327 p.
080 _a624.074.4
_bW5
041 _aEN
942 _cBK
999 _c103789
_d103789