α+ß₁D+ß₂D²+γX+δ₁w+δ₂w²+δ₃log y= Posted bymikaeljohaniApril 12, 2007Posted inUncategorized There’s a birdand a tree. Share this:Share Share on Facebook (Opens in new window) Facebook Share on X (Opens in new window) X Share on Tumblr (Opens in new window) Tumblr Email a link to a friend (Opens in new window) Email Like Loading... Related