Encyclopedia of associations : an associations unlimited reference : a guide to more than 22,900 national and international organizations, including : trade, business, and commercial ; environmental and agricultural ; legal, governmental, public administration, and military ; engineering, technological, and natural and social sciences ; educational ; cultural ; social welfare ; health and medical ; public affairs ; fraternal, nationality, and ethnic ; religious ; veterans', hereditary, and patriotic ; hobby and avocational ; athletic and sports ; labor unions, associations, and federations