004280000a22001330004500003000900000005001700009110006300026245009900089264004000188490003400228300000900262041000800271650001500279PH-MaWHO20241108112124.0  aUnited Nations. Department of Economic and Social Affairs.  aConcise report on the world population situation in 1970-1975 and its long range implications.  aNew York : bUnited Nations,c1974.  a(Population studies ; no. 56)  a70p.  aeng  aPopulation