00419nam a2200133 a 450000500170000002000150001708200130003210000250004510000170007024501060008726000370019330000230023063000320025320251203091556.0  a0283999268  a509bHEL  aHellemans, Alexander  aBunch, Bryan  aTimetables of scienceba chronology of the most important people and events in the history of science  aLondonbSidgwick & Jacksonc1989  ax,656p.c24cm.bHB  aScience-Dictionary of dates