00459nam a22001697a 4500008004100000020001800041040005500059080001400114100002000128245002100148260003800169300001400207650001300221653001900234700001700253700001900270230317b        |||||||| |||| 00| 0 eng d  a0-240-50821-1  aNational Science LibrarycNational Science Library  aD 655bL31 aElbert, Bruce R  aMachine printing  aLondon: bFocal Press Ltd, c1973  aix, 245p.  aPrinting  aMachine design  aMeacock, C W  aWhitworth, R E