Interviewer instructions
B.5 The main sources of heating
a) Central heating: if the dwelling unit is equipped with a group, regional or united boiler-house, provided with steam heating from water electric center.
b) Gas: if the dwellings unit is mainly heated by gas.
c) Electricity: if the dwellings unit is heated by electric heaters, electric stoves and other electric equipments.
d) Coal: if coal is used for the heating of the dwelling unit.
e) Wood: if wood is the main fuel for heating the dwelling unit.
f) Manure: if manure is the main fuel for the heating.
g) Oil: if oil or other oil product is used for heating the dwelling unit.
h) Other: if other fuels than those mentioned above are used.