00478nam a2200133Ia 4500008004100000040001700041082002200058110004100080245004800121260004100169300001200210500007600222650004600298190328s9999||||xx |||||||||||||| ||und||  aNITILcNITIL  221sta311.2bI39N  aIndia. National Sample Survey Office 0aNSS 20th round :urban: July 1967- June 1968  aDelhibManager of Publicationsc1970  ai, 64p.  aContents: no. 187- Pilot enquiry on building construction- some results  aSampling (Statistics); House construction