Approximation Methods of Quantum Mechanics by Migdal & Krainov

Mathematical Methods for Physics: An Introduction to Group Theory, Topology and

Introduction to Methods of Approximation in Physics and Astro... - 9789811029318

Space And Time In Contemporary Physics An Introduction To The Theory Of Relativi

An Introduction to the Mathematics and Methods of Astrodynamics Richard H Battin

Introduction To Optical Mineralogy And Petrography - The Practical Methods 1916

Approximation Theory and Methods

Mathematical Methods for Physics: An Introduction to Group Theory, Topology Geo