National Natural Landmarks review form: Unionville Serpentine Barrens, Chester County, Pennsylvania
Anonymous (not verified)
Plants identified on 73 visits to 32 serpentine sites in Pennsylvania and Delaware, 1982-83
Anonymous (not verified)
Floral inventory of the Goat Hill serpentine barren
Anonymous (not verified)
Preliminary Report on the Chromite Occurrence at the Wood Mine, Pennsylvania
Anonymous (not verified)
Soil surveys of Chester and Delaware Counties, Pennsylvania
Anonymous (not verified)
Exchangeable calcium and magnesium levels in Allegheny mound-ant (Formica exsectoides F., Hymenoptera: Formicidae) anthills on Pink Hill, a serpentine barrens in Tyler Arboretum, Delaware County, Pennsylvania
Anonymous (not verified)
Willisbrook Barrens site fire management plan
Anonymous (not verified)
Serpentine barrens in Chester County, Pennsylvania
Anonymous (not verified)
Soils and vegetation of the Unionville Serpentine outcrop
Anonymous (not verified)