অনুরূপ উপাদানগুলি: Proceedings and reports of the second session of the General Assembly /
- Proces-verbaux proceedings /
- Proceedings and papers of the technical meeting /
- Eleventh General Assembly: proceedings /
- Rapport sur la Conference pour la Protection Internationale de la Nature = Report on the Conference puur la Protection Internationale de la Nature = Report on the conference for the Internation Protection of Nature /
- Tenth general assembly /
- Environmental conservation education problems in India /