text New York John Wiley Sons 1947 Ind xii,; 212p.: 25cm xii,; 212p.: 25cm Index.: p. 200-212 WALD, Abraham Mathematical methods 519.2 519.2WALs INLIS000000000030209 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)