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STUDIES ON A CHILD POPULATION: IV. THE FORM OF THE LOWER END OF THE FREQUENCY DISTRIBUTION OF STANFORD‐BINET INTELLIGENCE QUOTIENTS AND THE FALL OF LOW INTELLIGENCE QUOTIENTS WITH ADVANCING AGE
Anordnung zum Vergleich von Wechselstromwiderstaenden mit nur wenig verschiedenen Normalwiderstaenden, insbesondere zum Vergleich von Drehkondensatoren, unter Verwendung einer Gleichrichterschaltung zur Messung der Abweichungen