The vegetation history of Fort Frederica, Saint Simons Island, Georgia (Research/resources management report)
Ecological portion, Florida peninsula, natural region theme study: Final report to the National Park Service, United States Department of the Interior
Publicatons of the Idaho National Engineering Laboratory Radioecology and Ecology Program: 1974-1991
Exploring plants and animals
Palomita Reserve, Ottawa County, Michigan land conservancy of West Michigan
The biology and ecology of Passiflora mollissima in Hawaii (Technical report / Cooperative National Park Resources Studies Unit, University of Hawaii at Manoa, Department of Botany)
An ecological study of the vegetation of the Black Hills National Forest of South Dakota and Wyoming: A habitat type classification
The Plant Information Network (PIN) data base: Colorado, Montana, North Dakota, Utah, and Wyoming (FWS/OBS)
Great mystery, we feel you all around!: Nature study with children : based on ancient Seneca wisdom
Vegetation and Macrofungi of Acid Oakwoods in the North-East of the Netherlands