• Whigham, Dennis F. ; Simpson, R. L. (1978). Nitrogen and phosphorus movement in a freshwater tidal wetland receiving sewage effluent . Coastal Zone 78: Symposium on Technical, Environmental, Socioeconomic, and Regulatory Aspects of Coastal Zone Management (2189-2203) American Society of Civil Engineering .
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  • (1977). Differences facilitating the coexistence of two sympatric, orb-web spiders, Argiope aurantia Lucas and Agriope trisasciatta (Forskal) (Araneidae, Araneae). M.S. Thesis, University of Maryland .
  • (1977). Geochemistry and minerology of suspended and benthic sediments in the Rhode River estuary. M.S. Thesis, George Washington University .
  • (1977). Non-Point Source Studies on Chesapeake Bay: III. Relationship Between Bacterial Contamination and Land Use in the Rhode River Watershed, and Survival Studies of Streptococcus faecalis in the Estuary. Chesapeake Research Consortium .
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  • (1977). Phytochrome, a Bibliography with Author, Biological Materials, Taxonomic, and Subject Indexes of Publications Prior to 1975. Smithsonian Institution Press .
  • Chirlin, Gary R. ; Correll, David L. (1977). A linear approach to the calculation of area yield coefficients based on land use. Watershed Research in Eastern North America (831-860) Smithsonian Institution Press .
  • Chirlin, Gary R. ; Schaffner, Robert W. (1977). Observations on the water balance for seven sub-basins of the Rhode River, Maryland. Watershed Research in Eastern North America (277-306) Smithsonian Institution Press .