1. Gregory Markopoulos Record type: document Document type: still Publication date: 1963 Sum Document source: Film Culture Document contains: production co Number of pages: 2 Related films: Swain — Markopoulos, Gregory J. — United States — 1950Serenity — Markopoulos, Gregory J. — Greece — 1961Twice a Man — Markopoulos, Gregory J. — United States — 1963