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![POWER SPECTRAL DENSITY UNITS: [G^2 / Hz]](http://s2.studylib.net/store/data/018607566_1-d1dd35e6e39abfc67fdb99aa1e691743-300x300.png)
![Power Authority to Destroy the Works of the Devil by Guillermo Maldonado [Maldonado, Guillermo] (z-lib.org) (2)](http://s2.studylib.net/store/data/025667910_1-f2ec90a4e28eec03a7291d368fa0a726-300x300.png)
