![German rapper Cro receives the 2013 Echo Music Award in the category 'newcomer national' at the Echo Awards ceremony in Berlin, Germany, 21 March 2013. Photo: Britta Pedersen/dpa +++(c) dpa - Bildfunk+++ German rapper Cro receives the 2013 Echo Music Award in the category 'newcomer national' at the Echo Awards ceremony in Berlin, Germany, 21 March 2013. Photo: Britta Pedersen/dpa +++(c) dpa - Bildfunk+++](https://c8.alamy.com/comp/D5169R/german-rapper-cro-receives-the-2013-echo-music-award-in-the-category-D5169R.jpg)
German rapper Cro receives the 2013 Echo Music Award in the category 'newcomer national' at the Echo Awards ceremony in Berlin, Germany, 21 March 2013. Photo: Britta Pedersen/dpa +++(c) dpa - Bildfunk+++
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Range spread of F region echo trace corresponding to (a) first category... | Download Scientific Diagram
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