00338pab a2200121 454500008004000000100002000040245006900060260000900129300001200138362000900150650002800159773002900187180718b1987   xxu||||| |||| 00| 0 eng d  aPetchey, Roland  aHealth maintenance organisationsbJust what the doctor ordered ?  c1987  a489-507  aOct.  aHealth Centres - U.S.A.  aJournal of Social Policy