The International Standards Institute (ISO) defines itself thusly:
"ISO (International Organization for Standardization) is the world's largest developer and publisher of International Standards.
ISO is a network of the national standards institutes of 162 countries, one member per country, with a Central Secretariat in Geneva, Switzerland, that coordinates the system.
ISO is a non-governmental organization that forms a bridge between the public and private sectors. On the one hand, many of its member institutes are part of the governmental structure of their countries, or are mandated by their government. On the other hand, other members have their roots uniquely in the private sector, having been set up by national partnerships of industry associations. "
The two best known sets are ISO 9000 which is about quality management and ISO 14000 that deals with environmental management.
Check the UMD Library catalog to search for an ISO standard but we have very few of the standards although we have a number of books and journal articles that interpret an ISO standard.