. "Majumdar, Shyamal K., 1938-" . . . . . . "Air pollution" . . . "Avian ecology and conservation" . . . "Biological diversity" . . . "Conservation and resource management" . . . "Contaminant problems and management of living Chesapeake Bay resources" . . . "Ecology and restoration of the Delaware River Basin" . . . "Ecology of wetlands and associated systems" . . . "Endangered and threatened species programs in Pennsylvania and other states" . . . "Energy, environment, and the economy" . . . "Environmental consequences of energy production" . . . "Environmental contaminants, ecosystems and human health" . . . "Environmental radon" . . . "Ethics in academia" . . . "Global climate change" . . . "Hazardous and toxic wastes" . . . "Management of radioactive materials and wastes" . . . "Medicine and health care into the twenty-first century" . . . "Natural and technological disasters" . . . "Pandemic influenza viruses" . . . "Pennsylvania coal" . . . "Renewable energy" . . . "Riley, Herbert Parkes, 1904- The Aloineae, a biosystematic survey" . . . "Science education in the United States" . . . "Science, technology, and national security" . . . "Solid and liquid wastes" . . . "The era of materials" . . . "The oceans" . . . "Water resources in Pennsylvania" . . . "Wetlands ecology and conservation" . . . "Wildlife diseases" .