00520nam a22001577a 4500008004100000022001400041040005500055080002300110245011800133250001300251260004600264300001600310500001500326650000900341653001200350230310b        |||||||| |||| 00| 0 eng d  a1048-9711  aNational Science LibrarycNational Science Library  aD 025.43LCSHbP0.4  aLibrary of congress subject headingsc/ Prepared by the office for subject cataloging policy collections services  a23rd ed.  aWashington: bLibrary of Congress, c2000  aiii, 5230p.  aVol. 4 N-R  aLCSH  aSymbols