00306nam a2200133Ia 4500003000400000005001700004008004100021020001800062040001000080100001700090245003600107260002000143260000900163OSt20240113112826.0170524s9999    xx            000 0 und d  a9788120321076  ciimtu  aPopov egor I 0aEngineering Mechanics of solids  bNew Delhi P H I  c1998