Extract from the Instruction to Enumerators for filling up Individual Slip, Note on Sampling Procedure Adopted in 1971 Census, Migrant workers and non-workers according to main activity classified by place of last residence, Migrants classified by place of last residence age group, duration of residence in place of Enumeration, Migrations form Beyond the state of Enumeration, Classified by state of last Residence and age, for Duration of Residence of 0-9 years, Population of urban (including Agglomeration) having population of 100,000 and above classified by place of last Residence and Duration of Residence.