The thermal conductivity of the charge-density-wave compound K0.3MoO3
has been investigated in the chain direction and in both perpendicular
directions. A strong anisotropy is observed in the temperature range
100-300 K. The detailed analysis of the temperature dependence in all
three directions confirms that in addition to the lattice and free car
riers there are very anisotropic contributions to the thermal conducti
vity coming from the phase and amplitude fluctuations.