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IRE Transactions on Broadcast and Television Receivers > 1959 > BTR-5 > 2 > 25 - 32
IRE Transactions on Broadcast and Television Receivers > 1959 > BTR-5 > 3 > 46 - 53
IRE Transactions on Broadcast and Television Receivers > 1958 > BTR-4 > 3 > 36 - 41
IRE Transactions on Broadcast and Television Receivers > 1955 > BTR-1 > 2 > 1 - 15