共 50 条
- [25] Leveraging Research and Development: Assessing the Impact of the U.S. Advanced Technology Program Small Business Economics, 2003, 20 : 153 - 165
- [27] U.S. EPA to focus more on constituency needs, concerns Water Environment and Technology, 2002, 14 (09): : 51 - 53
- [29] Status of Aquatic Bioassessment in U.S. EPA Region IX Environmental Monitoring and Assessment, 2000, 64 : 17 - 30
- [30] U.S. EPA addresses persistent, bioaccumulative, and toxic pollutants 2000, Water Environment Federation, Alexandria, VA, USA (12):