00370nam a22001457a 4500003000400000005001700004008004100021020001100062040002500073100002400098245004600122250001200168260003300180300001100213OSt20260319111100.0260319b        |||||||| |||| 00| 0 eng d  a(pbk.)  cNVSU Library Bambang  aRichards, Thomas J.  aSpectrum Mathematics.cThomas J. Richards  a3rd ed.  aIllinois:bMacmillan,c1990.  a191 p.