R help - Jan 2014 - Encoding issue

R 3.0.2
OS X

Colleagues,

I know little about encoding so please be patient with this question.  I have a
CSV file created from a SAS7BDAT dataset (using Shotwell's SAS7BDAT
package).  In the CSV file, when opened with XL, one entry reads as:
	??????mol/L

When I read this into R, that entry becomes:
	\U3e35623cmol/L

I assume (perhaps naively) that this is a recoding.  Whenever this occurs, I
would like to use "sub" to replace the first portion of the string
with micro (so the entire string reads micromol/L).  However, when I use grep to
identify presence of the string, R does not appear to detect it consistently. 
Perhaps I am not escaping things correctly or perhaps my understanding of this
encoding is flawed.

Can anyone provide some useful pointers here?

Dennis


Dennis Fisher MD
P < (The "P Less Than" Company)
Phone: 1-866-PLessThan (1-866-753-7784)
Fax: 1-866-PLessThan (1-866-753-7784)
www.PLessThan.com