`... I consider this book a valuable introduction to a class of statistical turbulence theories. It is also an interesting discussion of magnetohydrodynamic turbulence. As such, it has a place on the shelves of advanced researchers in the field.' AIAA Journal, 38:3 (2000) `... I found this book very good. It provides an in-depth survey of recent advances in the field of statistical-theoretical turbulence modelling ... this is a valuable source for postgraduate students, physicists, geophysicists and engineers interested in learning about turbulence theory and its limitations.' Pure Applied Geophysics, 157 (2000) `... a brave attempt to cover a horribly difficult field ...' Journal of Fluid Mechanics, 469 (2002)