Richard G. Ervin has written:
'Archeological survey near the Maryland route 161 Bridge over
Deer Creek, Harford County, Maryland'
'Archeological survey of the Maryland Route 45 bridge over a
Department of Natural Resources trail, Baltimore County,
Maryland'
'Archeological survey of the U.S. Route 301/Maryland Route 213
intersection, Queen Annes County, Maryland' -- subject(s):
Antiquities, Archaeological surveying
'Archeological survey at the intersection of interstate 95 and
Maryland route 152, Harford County, Maryland'