Stanyon, R., F. Bigoni, J. Wienberg & J. Hadidian. 1993. A standardized G-banded karyotype for the raccoon (Procyon lotor) compared with the domestic cat. Boll. Zool. 60: 41-45.

Porter, W., M. Coffey & J. Hadidian. In search of a litmus test: white-tailed deer management on the National Parks. Wild. Soc. Bull. MS#WB-188-92. In Press.

Hadidian, J., D. Manski & S. Riley. 1993. Home range utilization and population characteristics of urban raccoons. 4th Annual Intl. Meeting, "Advances Towards Rabies Control in the Americas", pg. 33. Philadelphia, Pa.: Thomas Jefferson University. (Abstract).

VanDruff, L., B. Bruleigh, & J. Hadidian. 1993. Woodchuck impacts on cultural and natural resources at Antietam National Battlefield and Cemetery. NEA-WDB Technical Notes 1(3): 3-5.

Hadidian, J. 1994. Science and management of white-tailed deer in the National Parks. Proc. 7th Conf. on Research and Resource Management in Parks and on Public Lands. The George Wright Society. (Society Proceedings).

Hadidian, J., C. Schell, J. Hall & M. Poole. in press. Draft Environmental Assessment: White- tailed deer management in Catoctin Mountain Park, Frederick, Maryland. 63pp. (Environmental Assessment).

Hadidian, J., W. Butler, K. D'Loughy, M. Greebaum, J.E. Hench, C. Hitchcock, D. Hubbard, J. Kennedy, R. Mattern, D.A. Poole, M.E. Poole, L. Ritter, D.J. Schubert, M. Swick, D. Tregoining, D.K. Weaver, W. Wilhem, C. Winter. in press. Report of the Task Force to Study White-tailed Deer Management in Montgomery County, Maryland. Rockville, MD: Montgomery County Government. 54 pp. (Task Force Report).

Harwell, M.A., J. Long, A. Bartuska, P. Bradt, W. Chang, J. Ehrenfeld, J. Hadidian, R. Hamman, O. Loucks, M. Slimak, B. Solecki, R. Walker, J. Wilson, J. Zieman & E. Zubrow. 1993. Ecological Sustainability and Human Institutions: Phase II U.S. MAB Human Dominated Systems Directorate Core Project Proposal. Proposal to U.S. MAB National Committee.

Hammerschlag, Richard S. Vegetation Studies at Kenilworth Marsh-1993. In Kenilworth Marsh Monitoring Studies. 1993.

Patterson, James C. 1993. Diagnosing and Overcoming Urban Soil Problems. Ground Work, Official Publication of the Landscape Contractors Association. March, 1993. pp. 10-14.

Patterson, James C. and C.J. Bates, 1994. Long Term, Light-Weight Aggregate Performance as Soil Amendments. Proceedings of an International Workshop on Tree Root Development in Urban Soils. International Society of Arboriculture, Savoy, Il. pp. 149-156.

Favre, C.L., J.L. Sherald, and N.F. Schneeberger. 1993. Gypsy moth management in Rock Creek Park, Washington, D.C. J. Arboric. 19:160-167.

Hajela, R.K., L. S. Graham, J.L. Sherald, and M.B. Sticklen. 1993. Nucleotide sequences of a cDNA encoding a chitinase polypeptide from NPS 3-487 elm selection. Announcement Section of Plant Mol. Bioil. (In press)

Sherald, J.L. 1993. Pathogenicity of Xylella fastidiosa in American elm and failure of reciprocal transmission between strains from elm and sycamore. Plant Dis. 77:190-193.

Sherald, J.L. 1994. Bacterial leaf scorch of landscape trees. 'Diagnostic Sheet' - Plant Disease Diagnostic Manual. APS Diag. Com. (In press)

Sherald, J.L., E.N. Patton, T.M. Stidham, and C.L. Favre. 1994. Incidence and development of bacterial leaf scorch of elm on the National Mall. J. Arboric. 20:18-23.

Sherald, J.L., F.S. Santamour Jr., R.K. Hajela, N. Hajela, and M.B. Sticklen. 1994. A triploid elm resistant to Dutch elm disease. Phytopathology 84: (Abstract) In press.

Sherald, J.K., T.M. Stidham, and L.E. Roberts. 1994. Evaluation of eight species of Cornus for resistance to dogwood anthracnose. J. Envir. Hort. (In press)

Sherald, J.L. 1993. Bacterial leaf scorch of landscape trees. Center for Urban Ecology Information Bulletin, National Park Service, Washington, D.C. pp.4.

Sherald, J.L. 1993. Demands and opportunities for selecting disease-resistant elms. In M.B. Sticklen and J.L. Sherald (eds.) Dutch Elm Disease Research: Cellular and Molecular Approaches. Springer-Verlag New York, Berlin, Heidelberg. pp.60-68. (Book chapter)

Sticklen, M.B., R.K. Hajela, M.G. Bolyard, L.S. Graham, and J.L. Sherald, 1993. Advances in gene cloning and genetic engineering of elms. In: Bajaj Y.P.S. (ed.). Plant Protoplasts and Genetic Engineering of Plants. Vol. V. Springer-Verlag, New York, Berlin, Heidelberg. (Book chapter - in press)

Sticklen, M.B. and J.L. Sherald (eds.). 1993. Dutch elm disease research: Cellular and molecular approaches. Springer-Verlag New York, Berlin, Heidelberg. 332 pp. (Book)

Short, J.R. 1994. Characterization and mapping of the anthropogenic soils of the Washington Monument Grounds. In: William E. Brown and Stephen D. Veirs, Jr. (Ed.). Partners in Stewardship: Proceedings of the 7th Conference on Research and Resource Management in Parks and on Public Lands. Hancock, Michigan: The George Wright Society. pp.443-451.

Short, J.R. 1994. Comparison of the Core and Clod Methods for Determining the Bulk Density of Anthropogenic Soils. Journal of Soil and Water Conservation. In review.

Thomas, L.K. Chemical grubbing for control of exotic wisteria castanea. 58(3):209-213.

Xu, Zharoan and L.K. Thomas. 1994. Changes of wetland vegetation in Dyke Marsh by using G.I.S. technology Bull. Ecol. Soc. America supplement. T5(2).

Thomas, L.K. 1993. Restoration ecology and exotic plant management. Bulletin of the Ecological Society of America Supplement 74(2):454.