What are the parallel bundles of collagenic fibers that provide strength found in tendons?
Since this is not my area of expertise, I searched Google under the key words "collagenic fibers tendons" to get these possible sources:
http://www.polychondritis.com/Anatomy/connectivetissue/Tendons_and_Tendinitis.html
http://encyclopedia.farlex.com/collagenic
http://www.answers.com/topic/collagen
Use one of the terms as search words within these sites.
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.
I hope this helps. Thanks for asking.