00295naa a2200109 a 450000100080000000500110000800800410001910000170006024500610007726000090013877300380014716150821995-06-27       1958    bl ---       0--  u    #d1 aWHITE, L. P.  aMelaninba naturally occurring cation exchange material.  c1958  tNaturegv.182, p.1427-1428, 1958.