00259nam a22001097a 4500003000400000008004100004082001400045100001500059245003600074260003100110300000800141OSt231225b        |||||||| |||| 00| 0 eng d  a531bB39M  aBeer,F. P.  aMechanics for engineers statics  aMcgrawHill Kogakushac1976  a410