[R] reading large data sets

[Rama Giorgia]

I have some difficulties in reading big dataset; I have to import a dataset with 1'661'852 observations saved in a 51.4Mb - txt file.
 I was wandering if this is a memory size problem or if I realy can't import such big datasets.
 If the memory allocated to my R is not enough, I would like to know exactly which comands I should use in order to read and use my large dataset.   

I Looking forward to hearing from you.

    Giorgia Rama
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