World population problems still to be solved despite progress.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D003142:Communication; D003710:Demography; D004467:Economics; D006262:Health; D006295:Health Resources; D006301:Health Services Needs and Demand; D009934:Organization and Administration; D011153:Population; D011154:Population Characteristics; D011157:Population Dynamics; D011158:Population Growth; D018456:Reproductive Medicine
Adolescents; Adult; Age Factors; Aged; Communication; Demographic Factors; Economic Factors; Health; Needs; Organization And Administration; Population; Population Characteristics; Population Dynamics; Population Growth; Reproductive Health; Resources; World; Youth