Filtering by: Date created tesim March 12, 1973 Remove constraint Date created tesim: March 12, 1973 Collection PA Evaluation and Standardization Era (1973-1980) Remove constraint Collection: PA Evaluation and Standardization Era (1973-1980) Subject Congresses and conventions -- economics Remove constraint Subject: Congresses and conventions -- economics Subject Cost Remove constraint Subject: Cost Subject Organizations Remove constraint Subject: Organizations