共 50 条
- [42] UNITED-STATES HOSPITALS SPEND ONE QUARTER OF FUNDS ON ADMINISTRATION BRITISH MEDICAL JOURNAL, 1993, 307 (6901): : 401 - 401
- [46] DIURNAL CURVES OF TROPOSPHERIC OZONE IN THE WESTERN UNITED-STATES ATMOSPHERIC ENVIRONMENT PART A-GENERAL TOPICS, 1991, 25 (08): : 1577 - 1590
- [47] GEOGRAPHICAL PROPERTIES OF OZONE CONCENTRATIONS IN NORTHEASTERN UNITED-STATES JOURNAL OF THE AIR POLLUTION CONTROL ASSOCIATION, 1977, 27 (04): : 325 - 328