2 电子书 James R. Allen
James R Allen: Illegal Alien and Immigrant Issues
The unauthorized alien (illegal alien) population in the United States is a key and controversial immigration issue. In recent years, competing views on how to address this population have proved to …
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€268.85
Javier Guillen Gerada: Radionuclides
We live in a radioactive world. This fact poses some questions: where does it come from?; how much radioactivity is there?; how can it affect human health? The radioactive content surrounding us has …
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€283.79