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3439199
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H03 - BASIC ELECTRONIC CIRCUITRY
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3238476
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B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
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3152295
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B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
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3151284
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B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
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3136954
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H03 - BASIC ELECTRONIC CIRCUITRY
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3015764
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H03 - BASIC ELECTRONIC CIRCUITRY
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H03 - BASIC ELECTRONIC CIRCUITRY
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H03 - BASIC ELECTRONIC CIRCUITRY
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2696560
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H03 - BASIC ELECTRONIC CIRCUITRY
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2683856
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G11 - INFORMATION STORAGE
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H03 - BASIC ELECTRONIC CIRCUITRY
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2571019
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2547027
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1962154
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H03 - BASIC ELECTRONIC CIRCUITRY
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1937333
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1934061
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1882399
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1811128
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1811126
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1811127
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H03 - BASIC ELECTRONIC CIRCUITRY