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Bulk movement of fluids has been performed efficiently for centuries inside tubular cylindrical objects, such as pipes.

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Lastly, you input the name of the column that contains the values that should be put into the new columns. In addition, you may not always want to merge in the standard way that was described above. Writer Name Surname Gender Death Location ## 1 22 16 Jane Doe FEMALE 2015-05-10 5 ## 2 40 18 Edgar Poe MALE 1849-10-07 6 ## 3 41 36 Jane Austen FEMALE 1817-07-18 8 ## 4 72 36 Walt Whitman MALE 1892-03-26 7 ## Row.names Age. Data frames are also similar to lists, where each column is an element of the list and each element has the same length.

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