共 50 条
- [21] EXPENDITURES FOR PHYSICIANS SERVICES IN UNITED-STATES [J]. ECONOMETRICA, 1971, 39 (04) : 76 - &
- [22] OPHTHALMOLOGIC SERVICES FOR PEOPLE OF UNITED-STATES [J]. OPHTHALMOLOGY, 1978, 85 (10) : 989 - 990
- [24] CONSUMER EXPENDITURES FOR SERVICES IN THE UNITED-STATES [J]. JOURNAL OF MARKETING, 1956, 21 (01): : 24 - 35
- [25] THE ACCESSIBILITY OF ABORTION SERVICES IN THE UNITED-STATES [J]. FAMILY PLANNING PERSPECTIVES, 1991, 23 (06): : 246 - &
- [28] URANIUM ENRICHMENT SERVICES IN THE UNITED-STATES [J]. ATOMWIRTSCHAFT-ATOMTECHNIK, 1994, 39 (07): : 502 - 504
- [29] MENTAL HEALTH SERVICES IN UNITED-STATES [J]. ARQUIVOS BRASILEIROS DE PSICOLOGIA APLICADA, 1967, 19 (02): : 87 - 125
- [30] MEDICAL AND ASSOCIATED SERVICES IN THE UNITED-STATES [J]. BRITISH MEDICAL JOURNAL, 1956, 2 (SEP8): : 596 - 599