Němec, L. (1977). Czech Catholics at the 41st International Eucharistic Congress held August 1-8, 1976 in Philadelphia, USA. [Place of publication not identified]: [publisher not identified].

Němec, Ludvík. Czech Catholics At the 41st International Eucharistic Congress Held August 1-8, 1976 in Philadelphia, USA. [Place of publication not identified]: [publisher not identified], 1977.

Němec, Ludvík. Czech Catholics At the 41st International Eucharistic Congress Held August 1-8, 1976 in Philadelphia, USA. [Place of publication not identified]: [publisher not identified], 1977.