Dr. Rabhi Mustafa Aliyan's 'Principles of Library and Information Science' (2011) is an essential academic text for students and practitioners. Published by Dar Safa for Publishing and Distribution, this book meticulously lays out the foundational concepts of the discipline. It covers the historical development of libraries, core principles of classification, cataloging, information retrieval, and the challenges and opportunities presented by the digital age. The work serves as a comprehensive guide, providing readers with the necessary knowledge to navigate the evolving landscape of information management and library services, making it an indispensable resource for a solid academic grounding.