Inventory of historical and extant, native, persistent, unplanted grasslands and meadows in Pennsylvania
Anonymous (not verified)
Site action plan for Goat Hill Serpentine Barrens, Chester County, Pennsylvania
Anonymous (not verified)
The History of the Quarry
Anonymous (not verified)
Rare species form — Gentianopsis crinita, Robert E. Lee Park, Maryland, 13 October 1988
Anonymous (not verified)
Natural community survey form — Robert E. Lee Park, Maryland, 7 June 1985
Anonymous (not verified)
An experimental investigation of successional pathways and grassland restoration methods on an eastern serpentine barren
Anonymous (not verified)
Unionville Serpentine Barrens Restoration and Management Plan
Anonymous (not verified)
Unionville Serpentine Barrens Restoration and Management Plan: 2016– 2020 Update
Anonymous (not verified)
Pink Hill Serpentine Barrens Restoration and Management Plan
Anonymous (not verified)
The serpentines of Harford County, Maryland
Anonymous (not verified)