Al Sayed Omar Books

High Performance Liquid Chromatography: Theory, Instrumentation And Application In Drug Quality Control

By Omar., Moustafa A. Khalifa, Omar Al Sayed Omar, Khalifa, Moustafa A., Al Sayed Omar

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During the past decade, modern high-performance liquid chromatography (HPLC) utilization has expanded greatly, especially in the quality control of pharmaceutical products in drug quality control l...

How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

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