00450nam a2200133Ia 4500008004100000040001700041082002200058110004100080245002100121260004100142300000900183500007900192650004500271190328s9999||||xx |||||||||||||| ||und||  aNITILcNITIL  221sta311.2bI39N  aIndia. National Sample Survey Office 0aNSS 15th round :  aDelhibManager of Publicationsc1969  a27p.  aContents: no. 153 Differential birth, death and infant mortaility rates on  aSampling (Statistics); Infants-Mortality