000 00241 a2200073 4500
245 0 _aConference on Tropospheric Wave Propagation /
_c.
710 2 _aInstitution of Electrical Engineering.
_eWydawca
_4pbl
260 _aLondon :
_bIEE,
_c1968.
300 _aVII, 251 s.;
_c35 cm.
999 _c4448
_d4448