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Red Book: A Guide Book Of United States Paper Money. Atlanta: Whitman. ISBN 0-7948-1786-6. Hudgeons, Marc; Tom Hudgeons (2005). Official 2006 Blackbook Price Guide to United States Paper Money. New York: Random House. Hughes, Roderick (2004). Official Know-It-All Guide. Hollywood: Fredrick Fell Publishers. ISBN 0-88391-109-4.
However, the Peralta Mine eventually became unprofitable and after the money was gone Miguel Peralta turned to fraud. Dr. Dr. George M. Willing Jr. paid Peralta $20,000 for the mining rights for an enormous swath of land – about 3,000,000 acres (12,000 km 2 ) in southern Arizona and New Mexico – based on a deed originally granted by the ...
Formaldehyde (/ f ɔːr ˈ m æ l d ɪ h aɪ d / ⓘ for-MAL-di-hide, US also / f ə r-/ ⓘ fər-) (systematic name methanal) is an organic compound with the chemical formula CH 2 O and structure H−CHO, more precisely H 2 C=O.
An example of a bipartite graph, with a maximum matching (blue) and minimum vertex cover (red) both of size six. In the mathematical area of graph theory, Kőnig's theorem, proved by Dénes Kőnig (), describes an equivalence between the maximum matching problem and the minimum vertex cover problem in bipartite graphs.