00481nam a2200169Ia 4500003000900000008004100009040001600050080001900066100002300085245004500108260003900153300001600192490004400208650001400252650002600266650001900292IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a[8]:01:00bKOE  aKoenigsberger, Leo 0aHermann Von HelmholtzcLeo Koenigsberger  aNew YorkbDover Publicationsc1965  axvii, 440p.  aDover histories and classics of science  aBiography  aHermann Von Helmholtz  aNASA thesaurus