00358nam a2200109 a 450000500170000008200190001710000180003624500560005426000520011030000230016249000630018520251203090503.0  a512.2,bD, goo  aGoodearl, KR.  aPartially ordered abelian groups with interpolation  aProvidencebAmerican mathematical societyc1980  axxii, 336p, 22 cm.  aMathematical surveys and monographs, ISSN 0076-5376dNO.20