Who used the phrase ‘control-access directional type sources’?
A. R.E. Bopp
B. B.C. Wynar
C. W.A. Katz
D. R. Balay
Answer:C
Who used the phrase ‘control-access directional type sources’?
A. R.E. Bopp B. B.C. Wynar C. W.A. Katz D. R. Balay