The authors discuss here the different sources of industrial statistics in India, their limitations and
methods of filling the data gaps. The sources of data for the organised and unorganised sectors of
manufacturing industry are discussed in Section II. Section III reviews the sources for large and
small industries defined in terms of capital employed in plant and machinery. This section also
discusses about the index of industrial production its limitations especially with reference to its
use in the estimation of GDP from manufacturing at 2-digit level of industrial classification
Section IV covers data sources for mining and Section V gives concluding remarks.