Integration of surveys is usually achieved by having acommon sample ofultimate units or at least penultimate-stage units for different subjects. However, if the ultimate units relevant for a subject are unevenly spread over the region, they may not be adequately caught through a common general purpose sample. Such a situation did arise while planning for the 23rd round (July 1968–June 1969) of the Indian National Sample Survey owing to the inclusion of an enquiry on small-scale manufacturing establishments in this round. The modifications introduced to orient the common design toward this enquiry are discussed in this article.