Springer-Verlag hardcover edition of Serge Lang’s Introduction to Diophantine Approximations (New Expanded Edition). Bright yellow boards with publisher logo; cover shows light surface wear and a few small scuffs at edges. Interior pages are clean and intact with clear, crisp typesetting, math formulas, theorems, exercises, appendices and bibliography. Includes foreword, chapters on continued fractions, asymptotic approximations, quadratic irrationalities, tables of computations and an appendix by H. Trotter. Solid binding, straight spine, no loose pages. Ideal for students, researchers, or collectors seeking a complete academic copy of this classic number theory text.