U.S. private voluntary organizations assisting third world development.
D000569:Americas; D019049:Developed Countries; D003906:Developing Countries; D004467:Economics; D007390:International Agencies; D009656:North America; D009938:Organizations; D012922:Social Change; D014481:United States; D014837:Voluntary Health Agencies
Americas; Developed Countries; Developing Countries; Economic Development; Economic Factors; International Agencies; North America; Northern America; Organizations; Social Development; United States; Voluntary Health Agencies