00393nam a2200097Ia 4500008004100000050002100041100002000062245005500082247007600137264008200213230508s1972    xx            000 0 und d  aTS 250 B887 19721 aBruce, Leroy F.10aSheet metal shop practice 3rd ed.cBruce, Leroy F.  aSheet metal shop practice 3rd ed._TS 250 B887 1972_Bruce, Leroy F._1972  a[Place of publication not identified] : bAmerican Technical Society, c1972.