[O] HowTo? have R :sessions in org mode invoke a specific R

[Cook, Malcolm]

I wish to lock an org buffer to a particular installation of R so that all code 
blocks use it.

I found that I could not, for instance, write `:session R-3.0.1`.

Is there some best way for me to accomplish this?

Perhaps some way of setting inferior-R-program-name to a buffer local value?

Thanks!

~Malcolm