Golding & Widdis. (1991). Electrical measurements & measuring instruments (5th.).
Tohutoru Kātū Chicago (17th ed.)Golding me Widdis. Electrical Measurements & Measuring Instruments. 5th. Wheelers Student Edition, 1991.
Tohutoro MLA (9th ed.)Golding me Widdis. Electrical Measurements & Measuring Instruments. 5th. 1991.
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