Is There A Significant Difference Between 07 & 08 Sat Ii Test Prep Books?

I want to buy a SAT II Bio Book (Barron’s) and I was wondering if there’s a big difference between the 2007 and 2008 versions. The 07 one would cost me $13 less. Thanks

Is There A Significant Difference Between 07 & 08 Sat Ii Test Prep Books?

I want to buy a SAT II Bio Book (Barron’s) and I was wondering if there’s a big difference between the 2007 and 2008 versions. The 07 one would cost me $13 less. Thanks