00341nam a22001457a 4500020000800000082001300008100002200021245002700043250001200070260004300082300001000125654002300135654001500158654002200173  a...  a300bPRE  aPresgrave, Ralph   aDynamics of Time Study  a2nd ed.  aLondonbMcGraw-Hill Book Companyc1945  a238p.  aGeneral Miscellany  aManagement  aMedical Education