000
00288nam a2200121 4500
008
160616s 000 0
245
_a
Propagation of radio waves
100
_a
Dolukhanov, M
500
_a
C5:8M6 L1 B9:95 142K5
942
_c
BK
_2
BK9202
080
_a
538 DOL
080
_a
538 DOL
999
_c
9202
_d
9202