var_qstn_ivulnstr
Item 12: FOD sub-region: The four-digit code corresponding to the FOD sub-region to which the sample FSU belongs will be recorded against item 12. A "-" will be put against this item for the state samples and also for the central samples in respect of the states of Arunachal Pradesh, Manipur, Mizoram, Tripura, Leh (Ladakh) and Kargil districts of Jammu & Kashmir for which field work is carried out by the respective States.