00653cam a2200205   4500001000700000003000800007005001700015008004100032010001700073015001000090040002700100082001600127100002800143245007600171260007100247300002100318490004600339504004100385650002100426302303BD-DhUL20160605163358.0720727s1971    ja       b    000 0 eng    a   72182128   aJa***  aDLCcDLCdDLCdBD-DhUL00a368.01bNIE1 aNiwata, Noriaki,d1927-14aThe economic theory of insurance and social security /cNoriaki Niwata.  aTokyo :bSociety of Business and Commerce, Keio University,c1971.  a124 p. ;c22 cm.  aKeio monographs of business and commerce,  aIncludes bibliographical references. 0aSocial security.