Ritu Singh Books

Green Technologies and Environmental Sustainability
Microextraction Techniques in Analytical Toxicology
Microextraction Techniques in Analytical Toxicology
Microextraction Techniques in Analytical Toxicology
Microextraction Techniques in Analytical Toxicology
Microextraction Techniques in Analytical Toxicology
Engineering Chemistry
Engineering Chemistry

By Ritu Singh

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Green Technologies and Environmental Sustainability
President Pratibha Patil
President Pratibha Patil

By Ritu Singh

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Brief profile of Pratibha Patil, b. 1934, a president of India.

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Rashtrapati Pratibha Patila
Rashtrapati Pratibha Patila

By Ritu Singh

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Biography of Pratibha Patil, b. 1934, first woman president of India.

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What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.

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