00747nam0-22002771i-450-99000055241040332120001010000055241FED01000055241(Aleph)000055241FED0100005524120001010d--------km-y0itay50------baitay-------001yyStructural design with plasticsB. S. BenjaminNew Yorkvan Nostrand196923 cm259 p.Benjamin,Bezaleel Solomon38083ITUNINARICAUNIMARCBK99000055241040332105 64 562424DININDININStructural design with plastics320190UNINAING01