00295nam a2200097Ia 4500008004100000082001500041100001500056245007300071260004500144300000800189190710s9999    xx            000 0 und d  a375.574 M8  aMorholt, E 0aTeaching high school science: sourcebook for the biological sciences  aNew TorkbHarcourt, Brace & World,c1958  a506