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Dewey Decimal Classification (DDC)
(4)
600 Technology (Applied sciences)
(4)
621 Applied physics
(4)
621.3 Electrical, magnetic, optical, communications, computer engineering; electronics, lighting
(4)
621.38 Electronics, communications engineering
(4)
621.384 Radio and radar
(4)
621.384 5 Radiotelephony
(4)
621.384 56 Cellular telephone systems
(4)
Number of items at this level:
0
.
This list was generated on
Fri Feb 26 14:48:05 2021 WIB
.