00310nam a2200109Ia 450000500170000000800410001708200150005810000210007324500560009426000420015030000080019220260225044757.0260224s9999||||xx |||||||||||||| ||und||  a620.11 NAS  aWilliam A. Nash  0aTheory & problems of strength of materials 2nd ed.   aNew York: McGraw-Hill Book Co. c1987  a394