000 00242nam a22001097a 4500
082 _a621.384 DOL'P
100 _aDOLUKHAOV, M
_957551
245 _aPROPAGATION OF RADIO WAVES
260 _aMOSCOW
_bMIR
_c 1971
300 _a372P
942 _cBK
999 _c567822
_d567822