00308nam a22001097a 4500020001800000082001400018100002300032245004000055260003100095300001400126650005800140  a9788184896480  a620.1 BEA  aBeatty,  Millard F  aPrinciples of engineering mechanics  aNEW DELLHIbSPRINGERc1986  axxii,396P  aMathematical concepts and methods in science and engg