共 50 条
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- [24] SUPERMASTERGROUP TRANSLATING EQUIPMENT FOR 60 MHZ CARRIER TELEPHONE SYSTEMS ERICSSON REVIEW, 1971, 48 (03): : 89 - &
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- [28] TERMINATING EXTERNAL CABLES IN TELEPHONE EXCHANGES POST OFFICE ELECTRICAL ENGINEERS JOURNAL, 1972, 65 (APR): : 43 - &