621.381 Electronics
621.3815 Components and circuits
621.38150112 Electronic circuits--forecasting 621.38150286 Electronic circuits--waste technology 621.38151 Electronic tubes 621.38152 Semiconductors 621.38153 Printed circuits and circuits for specific functions 621.38154 Supplementary components 621.38159 Analog-to-digital and digital-to-analog converters
Dewey Decimal Classification
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