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Society for Promoting Christian Knowledge (SPCK ) is the biggest independent Christian publisher in the UK and a UK-based Christian charity patronised by the royal family since Queen Anne in 1865. His Majesty King Charles continued our longstanding and treasured relationship with the royal family by becoming our charity's royal patron in 2024. Founded in 1698 by Thomas Bray, we have worked for over 300 years to increase awareness of the Christian faith in the UK and worldwide....
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"Avian carriers can provide high delay, low throughput, and low altitude service. The connection topology is limited to a single point-to-point path for each carrier, used with standard carriers, but many carriers can be used without significant interference with each other, outside early spring. This is because of the 3D ether space available to the carriers, in contrast to the 1D ether used by IEEE802.3. The carriers have an intrinsic collision avoidance system...

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