View Dr. Coder talking about the essential elements of trees and understand chemistry from a tree’s perspective.     This classic Coder presentation makes a typically dry subject both entertaining and informative.

The full presentation with powerpoint may be viewed on your computer for $5.00.   To view, add the video to your cart below.   



To stream video/powerpoint press here
(The link and password to access video will be available after the purhase.  It will emailed to you within 48 hrs.  Or, to access the link and password immediately, click “return to merchant” after your PayPal purchase.)