ABSTRACT
In an Indian state many may earn their livelihoods as iron or goldsmiths or by manufacturing stone chips or metal screws in the villages as private craftsmen and craftswomen. Though in India there is a National Sample Survey Office (NSSO) every year conducting nationwide big surveys in both rural and urban areas in every Indian state or union territory, such surveys hardly capture such earners industry-wise in sufficient numbers. NSSO-sampled villages may not contain enough goldsmiths and so their contributions to gross domestic product may be significantly underestimated. In 'network sampling' researchers identify two distinct types of units for defining the parameters of interest and statistics to use to estimate the former. The former is adaptive and the latter is network sampling technique. Both may lead to excessive sampling and a need arises to keep constraints on increasing sample sizes to keep them within a reasonable control.
