Popis
Popis jednotky:"This study was supported by the Health Care Financing Administration, U.S. Department of Health and Human Services, under cooperative agreement no. 17-C-99170/3"--Title page verso
Fyzický popis:1 online resource (2 volumes) : illustrations
Bibliografie:Includes bibliographical references and indexes.
ISBN:0585084777
9780585084770
0309042380