The District Magistrate, as such authority as the State Government may appoint in this behalf for any local area, may, by written order which shall have effect throughout the extent of his district or of such local area, as the case may be, call upon—

(a) all owners and occupiers of land, tenure-holders, and farmers and assignees of land revenue, or their agents.

(b) all members of the district, municipal, panchayat and other local authorities and officers and servants of such authorities, and

(c) all officers and members of staff of any factory, firm or establishment,