000 00302nam a2200121Ia 4500
008 190711s9999 xx 000 0 und d
082 _a624.95 W664
100 _aWILBY.C.B
245 0 _aCONCRETE SHELL ROOFS
260 _aLONDON
_bApplied Science Publishers
_c1977
300 _a23X15
942 _cBK
_2DDC
999 _c17009
_d17009