000 00288nam a2200121 4500
008 160616s 000 0
245 _aPropagation of radio waves
100 _aDolukhanov, M
500 _aC5:8M6 L1 B9:95 142K5
942 _cBK
_2BK9202
080 _a538 DOL
080 _a538 DOL
999 _c9202
_d9202