Andrew Steinberg
“Good job Mr. Berk. You make the material as interesting as could be, the atmosphere light ubt intellectual and have great examples.”
Attended in 2011
Princ Reg Econmic Advisor
San Diego Gas & Electric
“Good job Mr. Berk. You make the material as interesting as could be, the atmosphere light ubt intellectual and have great examples.”
See all testimonials from: San Diego Gas & Electric | Sempra Energy