A new ozone standard in the United StatesLEFOHN, A. S.Atmospheric environment (1994). 1997, Vol 31, Num 22, pp 3851-3852, issn 1352-2310Article

Science, uncertainty, and EPA's new ozone standardsLEFOHN, A. S.Environmental science & technology. 1997, Vol 31, Num 6, pp 280A-284A, issn 0013-936XArticle

Atmospheric Sciences and Applications to Air Quality (ASAAQ). International ConferenceCARMICHAEL, G; LEFOHN, A. S.Atmospheric environment (1994). 1998, Vol 32, Num 8, issn 1352-2310, 117 p.Conference Proceedings

Characterizing surface ozone concentrations in NorwayPEDERSEN, U; LEFOHN, A. S.Atmospheric environment (1994). 1994, Vol 28, Num 1, pp 89-101, issn 1352-2310Article

Establishing standards to protect vegetation: ozone exposure/dose considerationsLEFOHN, A. S; RUNECKLES, V. C.Atmospheric environment. 1987, Vol 21, Num 3, pp 561-568, issn 0004-6981Article

The caracterization of ozone and sulfur dioxide air quality data for assessing possible vegetation effectsLEFOHN, A. S; JONES, C. K.Journal of the Air Pollution Control Association. 1986, Vol 36, Num 10, pp 1123-1129, issn 0002-2470Article

NCLAN results and their application to the standard-setting process : protecting vegetation from surface ozone exposuresLEFOHN, A. S; FOLEY, J. K.Journal of the Air & Waste Management Association. 1992, Vol 42, Num 8, pp 1046-1052, issn 1047-3289Article

Surface ozone exposures measured at clean locations around the worldLEFOHN, A. S; KRUPA, S. V; WINSTANLEY, D et al.Environmental pollution (1987). 1990, Vol 63, Num 3, pp 189-224, issn 0269-7491Article

High resolution characterization of ozone data for sites located in forested areas of the United StatesLEFOHN, A. S; PINKERTON, J. E.JAPCA. 1988, Vol 38, Num 12, pp 1504-1511, issn 0894-0630Article

The characterization of ozone data for sites located in forested areas of the eastern united statesPINKERTON, J. E; LEFOHN, A. S.JAPCA. Journal of Air Pollution Control Association. 1987, Vol 37, Num 9, pp 1005-1010Article

Establishing standards to protect vegetation: ozone exposure/dose considerationsLEFOHN, A. S; RUNECKLES, V. C.Atmospheric environment. 1987, Vol 21, Num 3, pp 561-568, issn 0004-6981Article

The possible importance of forest soil processes in defining surface water pH depressionsLEFOHN, A. S; KLOCK, G. O.Journal of the Air Pollution Control Association. 1985, Vol 35, Num 6, pp 632-637, issn 0002-2470Article

Background ozone in the planetary boundary layer over the United StatesALTSHULLER, A. P; LEFOHN, A. S.Journal of the Air & Waste Management Association (1995). 1996, Vol 46, Num 2, pp 134-141, issn 1096-2247Article

Ozone exposures near class I wilderness areas in New Hampshire and VermontLEFOHN, A. S; MANNING, W. J.Atmospheric environment (1994). 1995, Vol 29, Num 5, pp 601-606, issn 1352-2310Article

Characterization of ambient ozone concentrations in commercial timberlands using available monitoring dataPINKERTON, J. E; LEFOHN, A. S.Tappi journal. 1986, Vol 69, Num 4, pp 58-62, issn 0734-1415Article

Acid rain effects research ― A status reportLEFOHN, A. S; BROCKSEN, R. W.Journal of the Air Pollution Control Association. 1984, Vol 34, Num 10, pp 1005-1013, issn 0002-2470Article

The co-occurrence of potentially phytotoxic concentrations of various gaseous air pollutantsLEFOHN, A. S; TINGEY, D. T.Atmospheric environment. 1984, Vol 18, Num 11, pp 2521-2526, issn 0004-6981Article

Establishing relevant ozone standards to protect vegetation and human health: exposure/dose-response considerationsLEFOHN, A. S; FOLEY, J. K.Journal of the Air & Waste Management Association. 1993, Vol 43, Num 1, pp 106-112, issn 1047-3289Article

CO-occurence of ozone and wet deposited hydrogen ion in the United StatesSMITH, L. A; LEFOHN, A. S.Atmospheric environment. Part A, General topics. 1991, Vol 25, Num 12, pp 2707-2716, issn 0960-1686Article

The relationship between hydrogen and sulphate ions in precipitation: a numerical analysis of rain and snowfall chemistryLEFOHN, A. S; KRUPA, S. V.Environmental pollution (1987). 1988, Vol 49, Num 4, pp 289-311, issn 0269-7491Article

Acidic precipitation. A technical amplification of NAPAP's findings. (A summary of the proceedings of the APCA international conference)LEFOHN, A. S; KRUPA, S. V.JAPCA. Journal of Air Pollution Control Association. 1988, Vol 38, Num 6, pp 766-776Article

The characterization of ozone, sulfur dioxide, and nitrogen dioxide for selected monitoring sites in the Federal Republic of GermanyLEFOHN, A. S; MOHNEN, V. A.Journal of the Air Pollution Control Association. 1986, Vol 36, Num 12, pp 1329-1337, issn 0002-2470Article

Ozone, sulfur dioxide, and nitrogen dioxide trends at rural sites located in the United StatesLEFOHN, A. S; SHADWICK, D. S.Atmospheric environment. Part A, General topics. 1991, Vol 25, Num 2, pp 491-501, 11 p.Article

Spatial and temporal variability of ozone exposure in forested areas of the United States and Canada : 1978-1988LEFOHN, A. S; LUCIER, A. A.Journal of the Air & Waste Management Association. 1991, Vol 41, Num 5, pp 694-701, issn 1047-3289Article

The importance of natural processes in understanding ecosystem change : a case study of limited lakesKRUG, E. C; LEFOHN, A. S.JAPCA. 1990, Vol 40, Num 6, pp 846-854, issn 0894-0630Article