Agrawal, R. Nuts and bolts: Seven small inventions that changed the world in a big way. W.W. Norton & Company.
Tohutoru Kātū Chicago (17th ed.)Agrawal, Roma. Nuts and Bolts: Seven Small Inventions That Changed the World in a Big Way. W.W. Norton & Company.
Tohutoro MLA (9th ed.)Agrawal, Roma. Nuts and Bolts: Seven Small Inventions That Changed the World in a Big Way. W.W. Norton & Company.
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