APA-čujuhus (7. p.)

TELECOM TRAINING CENTRE. (1977). TELECOMMUNICATION. TELECOMMUNICATION TRAINING CENTER.

Chicago-čujuhus (17. p.)

TELECOM TRAINING CENTRE. TELECOMMUNICATION. JABALPUR: TELECOMMUNICATION TRAINING CENTER, 1977.

MLA-čujuhus (9. p.)

TELECOM TRAINING CENTRE. TELECOMMUNICATION. TELECOMMUNICATION TRAINING CENTER, 1977.

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