This presents a balanced overview of the major methods currently available for obtaining numerical solutions
in neutron and gamma-ray transport. It focuses on methods particularly applicable to the complex problems encountered
in the analysis of reactors, fusion devices, radiation shielding, and other nuclear systems. It will be valuable
as a self-contained reference and text to practicing engineers involved in research and development, to users of
large transport computer codes for engineering analysis, and to first-year graduate students.