000
00274nam a2200109Ia 45e0
008
181001s1961 xx 000 0 und d
100
_a
Clayton & Shelly
245
0
_a
Electrical engineering
260
_b
Longmans
_c
1961
300
_a
490
942
_2
ddc
_c
BK
999
_c
2124
_d
2124