000 00241 a2200073 4500
245 0 _aITU Telecommunications for Development /
_c.
710 2 _aInternational Telecommunication Union.
_eWydawca
_4pbl
260 _aGeneva :
_bITU,
_c1983.
300 _awiele liczbowań;
_c30 cm.
999 _c1919
_d1919