The "Principles of Fluid Mechanics" by W.H. Li & S.H. Lam, published in 1964, is a textbook on the subject area of fluid mechanics and engineering. Written in English and part of the Addison-Wesley Series in Engineering Science, this advanced-level book covers 373 pages of fundamental principles and concepts in fluid mechanics. With a focus on engineering science, this textbook is designed for adult education and further education levels, making it a valuable resource for students and professionals in the field of fluid mechanics.