Lucknow: A school-level science exhibition under Samagra Shiksha Abhiyan was organised at Lalbagh Girls' Inter College on Monday. Chief guest, divisional science progress officer, Dinesh Kumar ...
Polygraph (cardio-pneumo-psychograph); 1921. Gift of City of Berkeley Police Department. Photo by Jaclyn Nash, National Museum of American History. The Smithsonian’s National Museum of American ...
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