Obrona terytorium kraju /
Chocha, Bolesław.
Erickson, John,1929-2002,former owner.StEdNL
Erickson, Ljubica,former owner.StEdNL
Warszawa : Wydawn. Ministerstwa Obrony Narodowej,
1974.
Includes bibliographical references.
John and Ljubica Erickson collection.
Civil defense