[R] Simple look up

[PDXRugger]

So i am hoping this solution is simple, which i beleive it is.  I would like
to look up a value in one column of a data set and display the corresponding
value in the 2nd column.  For example
TAZ    VACANT ACRES
100       45
101       62
102       23
103       64
104       101
105       280

So if i want to find TAZ 103 it would give me 64 as the corresponding value. 
Hope you guys can help

Cheers

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