TY - JOUR AU - Petersen, Gordon M. TI - Diophantine Approximations, by Ivan Niven. Interscience Tracts in Pure and Applied Mathematics, No. 14. Wiley, New York - London, 1963. viii + 68 pages. $5.00. JO - Canadian mathematical bulletin PY - 1964 SP - 487 EP - 487 VL - 7 IS - 3 UR - http://geodesic.mathdoc.fr/articles/10.1017/S0008439500031994/ DO - 10.1017/S0008439500031994 ID - 10_1017_S0008439500031994 ER -