000
00259nam a2200109Ia 4500
008
220201s1961 xx 000 0 eng d
100
_a
Rapson
245
0
_a
Experimental radio engg
260
_b
New York: Theo Audels Co
_c
1961
300
_a
1040
942
_2
ddc
999
_c
71538
_d
71538