21. AIDS Publication: [Czechoslovakia? : s.n., 19--] Subject(s): Acquired Immunodeficiency Syndrome -- transmissionAcquired Immunodeficiency Syndrome -- prevention & control
22. Źít Publication: [Czechoslovakia?] : Česká státní pojišovna ve spolupráci s Ústavem zdravotní výchovy Praha, [19--] Subject(s): Acquired Immunodeficiency Syndrome -- prevention & controlAcquired Immunodeficiency Syndrome -- psychologyCondoms