From the reviews of the fourth edition: Turbulence in Fluids contains a wealth of information, and its author is a top-tier scientist. ! The book is logically ordered and contains a comprehensive list of 738 references. ! Lesieur's monograph is recommended for those who already know quite a bit about turbulence, for the theoretically inclined, and in particular for those interested in homogeneous turbulence and geophysical flows and their numerical simulation. (Mohamed Gad-El-Hak, Siam Review, Vol. 51 (1), 2009)