00496nam a22001697a 4500008004100000020001500041050002200056100001800078245006600096250001200162260003800174300003000212500002000242650002400262650002400286700001600310160928b        xxu||||| |||| 00| 0 eng d  a0070325162  aT 353b.J47 1979   aJensen, Cecil  aEngineering drawing and design/cCecil Jensen and Jay Helsel.  a2nd ed.  aNew York :bMcGraw-Hill ;cc1979.  ax, 740p. :bill. ;c28cm.  aIncludes index.  aMechanical drawing.  aEngineering design.  aHelsel, Jay