Nr 205 - XX th International Tuberculosis Conference. 1970.; Nr 206 - Oto-Rhino-Laryngology .Proceedings of the Ninth International Congress. Mexico. 10-14 1969. 1970. Nr 207 - Advances in planned parenthood .Vol. 5.
Treść karty:
514,509 Nr 205 - XX th International Tuberculosis Conference. 1970. 515,334 Nr 206 - Oto-Rhino-Laryngology .Proceedings of the Ninth International Congress. Mexico. 10-14 1969. 1970. 510,738 Nr 207 - Advances in planned parenthood .Vol. 5. 1970.