TY - JOUR AU - Lightstone, A. H. TI - Summation of Infinitesimal Quantities, by I. Natanson. Hindustan Publ. Co. , Delhi 1961; published in America by Gordon and Breach, Science Publishers, New York 1962. 74 pages. $4. 50. JO - Canadian mathematical bulletin PY - 1963 SP - 292 EP - 293 VL - 6 IS - 2 UR - http://geodesic.mathdoc.fr/articles/10.1017/S0008439500026588/ DO - 10.1017/S0008439500026588 ID - 10_1017_S0008439500026588 ER -