... (NRAO

The NRAO is a facility of the National Science Foundation operated under cooperative agreement with Associated Universities, Inc.

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... (IRAM

IRAM is supported by INSU/CNRS (France), the MPG (Germany) and the IGN (Spain).

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... (MPIfR

The telescope at Effelsberg is operated by the MPIfR on behalf of the Max-Planck-Gesellschaft (MPG).

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