LEARN ABOUT SCIENCE : INVENTIONS-I /
"The present book, 'Inventions-I', is one of the eight books comprising Dhingra's 'Learn About Science' series. It describes all the unique andmarvelous inventions and discoveries accomplished by the mankind that have made our lives comfortable. The facts, given in a qu...
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| Language: | eng |
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Batu Caves, Selangor : Scholar's Publications,
2005
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