vlugschrift van de gids Vietnam en de ideologie van het Westen / G. van Benthem van den Bergh courrier de l'extreme-orient Nixon doctrine : some views regarding China and S.E. Asia / Somsakdi Xuto, T.C. Rhee, and W.A.C. Adiie pocket book special Vietnam perspective : CBS news special report / analysis by Walter Cronkite far eastern series threat to the peace : North Viet-Nam's effort to conquer South Vietnam / United States Department of States : Pt. 1 Vietnamese bestand onder de loupe / H. J. Neuman naval air war in Vietnam / by Peter B. Mersky, Norman Polmar