1. a U.S. Army Chemical Research Development and Engineering Center , Aberdeen Proving Ground, MD , 21010-5423
2. b Department of Chemistry , New Mexico State University , Las Cruces , NM , 88003
3. c GeoCenters, Inc , Fort Washington , MD , 20744
4. d U.S. Army Chemical Research Development and Engineering Center, SMCCR-RSL , Aberdeen Proving Ground, MD , 21010-5423