00483cam a22001451i 45000500011000001100020000112450087000312600038001183000034001564900031001905000059002216500016002806500022002966500019003180 aJX19772 aUnited Nations.10aHuman fertility and national development :ba challenge to science and technology.  aNew York,bUnited Nations,c1971.  ax, 140 p.billus., fold. map.1 a[United Nations. Document]  a"United Nations publication. Sales no.: E.71.II:A.12." 0aPopulation. 0aFertility, Human. 0aBirth control.