1
Έκδοση 1948
Full text available from ABI/INFORM Global: 09/01/1994 to present
Full text available from Healthcare Administration Database: 09/01/1994 to present
Full text available from Research Library: 09/01/1994 to present
Κυβερνητικό Έγγραφο Ηλεκτρονική πηγή Επιστημονικό περιοδικό
2
Έκδοση 1949
Full text available from ABI/INFORM Global: 05/01/1949 to 12/31/1985
Full text available from Health & Medical Collection: 05/01/1949 to 12/31/1985
Full text available from ABI/INFORM Global: 01/01/1986 to 06/30/1991
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
3
Full text available from ABI/INFORM Global: 10/01/1987 to present
Full text available from Political Science Database: 10/01/1987 to present
Full text available from Research Library: 10/01/1987 to present
Κυβερνητικό Έγγραφο Ηλεκτρονική πηγή Επιστημονικό περιοδικό