00395nam a2200121Ia 4500082002400000100003900024245011400063260003000177300000900207490004700216500000500263700000500268  a309.250182bUn58.SS  aUnited Nations, Statistical Office  aStatistical series for the use of less developed countries in programmes of economic and social developmentb  aNew YorkbThe Auth.c1959  a56p.  aStatistical papers, U.N., series Mv no.31  a  a