Scienti¿c American Reference Book (Classic Reprint) - Softcover

Inhaltsangabe

Excerpt from Scientific American Reference Book

Immense masses of Government material have been digested with painstaking care by competent statisticians, and the result will, in the judgment of the Editors, fully warrant the expenditure of considerable effort and results in the production of a unique book.

It is perhaps necessary to call attention to the fact that there are certain inconsistencies in the tables. In procuring the figures, for example, from different bureaus and departments of the Government, with reference to any subject, it is found that statistics vary in certain particulars. These differences are due to the different methods of tabulation or to different points of view. In many cases these discrepancies are noted in this book, to prevent the reader from forming erroneous conclusions. These cases must not be regarded as errors, and an attempt has been made to give, wherever possible, the date of the figures and the authority. Every available space has been taken up with useful information, whether germane to the chapter or not.

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