Quantum Fluids -- Helium — General Properties -- Superfluid 4He — Helium II -- Normal-Fluid 3He -- Superfluid 3He -- Mixtures of 3He and 4He -- Solids at Low Temperatures -- Phonons -- Conduction Electrons -- Magnetic Moments — Spins -- Tunneling Systems -- Superconductivity -- Principles of Refrigeration and Thermometry -- Cooling Techniques -- Thermometry.This book provides a concise bu…