Search Constraints
Filtering by:
Contributor
Stanhope, William D.
Remove constraint Contributor: Stanhope, William D.
Location
PA History Center
Remove constraint Location: PA History Center
Subject
Data Collection -- methods
Remove constraint Subject: Data Collection -- methods
Year
1980 to 1984
Remove constraint Year: <span class='from'>1980</span> to <span class='to'>1984</span>