User:Stone/MPS
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San Pedro Corralitos mining district | |
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Regulatory authority |
- http://archive.org/stream/applicationsofel00halerich/applicationsofel00halerich_djvu.txt.
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(help) - http://www.google.de/patents?hl=de&lr=&vid=USPAT972947.
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(help) - http://cheserver.ent.ohiou.edu/ChE455/ChE455web/Handouts_files/electrochemical%20engineering.pdf.
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(help) - Electricity in the American Economy: Agent of Technological Progress. 1990. ISBN 9780313275128.